Pakistan-Afghanistan Relations

1 Introduction

Pakistan-Afghanistan relations constitute one of the most important and complex bilateral relationships in South Asia. The two countries share a long and difficult border, deep historical, cultural, religious and social linkages, and substantial economic interdependence. At the same time, their relations have repeatedly been strained by the Durand Line dispute, cross-border militancy, terrorism, refugee movements, border management, trade restrictions and competing regional interests.

For Pakistan, Afghanistan is simultaneously a neighbouring state, security frontier, economic partner, transit corridor and gateway to Central Asia. For Afghanistan, Pakistan is an important route to the Arabian Sea, a major trading partner and an unavoidable regional actor because of geography.

The relationship therefore cannot be understood through security alone. It must be examined through the interconnected dimensions of history, geography, diplomacy, security, terrorism, refugees, trade, connectivity and regional geopolitics.

2 Geographical and Strategic Context

Pakistan and Afghanistan share a land border of more than 2,600 kilometres, stretching across mountainous, rugged and semi-arid terrain.

The geography has historically facilitated movement of people, traders, armies and political influences between the two territories. Important routes such as the Khyber Pass have connected South Asia with Afghanistan and, beyond it, Central Asia for centuries.

Afghanistan is landlocked and therefore depends on neighbouring countries for access to international markets. Pakistan provides Afghanistan with access to the Arabian Sea through its ports and road networks.

For Pakistan, a peaceful Afghanistan offers the possibility of overland connectivity with Central Asia.

Thus, geography creates a relationship of permanent interdependence: neither country can easily isolate itself from the other.

3 Historical Foundations of the Relationship

Modern Pakistan-Afghanistan relations began with the creation of Pakistan in 1947, but many of the disputes between the two countries predate Pakistan.

The most important inherited issue was the Durand Line, established in 1893 between the Afghan Amir Abdur Rahman Khan and Sir Mortimer Durand, representing British India.

When Pakistan emerged in 1947, it inherited the territory and international arrangements of British India.

Pakistan consequently regards the Durand Line as the established international border between Pakistan and Afghanistan.

Successive Afghan governments, however, historically questioned or rejected the Durand Line as a permanent international boundary.

The dispute has remained particularly sensitive because the border cuts across communities with longstanding ethnic, tribal, linguistic and family connections.

4 Pakistan’s Admission to the United Nations

Pakistan’s admission to the United Nations in 1947 became an early indicator of strained relations.

Afghanistan was the only country to vote against Pakistan’s admission, primarily because of its objections concerning the status of Pashtun-majority territories and the border question.

Afghanistan subsequently withdrew its negative vote, allowing diplomatic relations to develop.

The episode is significant because it demonstrates that Pakistan-Afghanistan tensions were present from the very beginning of Pakistan’s existence and did not originate solely from the later Soviet-Afghan War or Taliban era.

5 The Pashtunistan Question

The Pashtunistan issue became one of the principal sources of tension during the early decades of Pakistan.

Afghan governments and Pashtun nationalist elements advocated, in varying forms, greater political rights or a separate political arrangement for Pashtun-majority areas on the Pakistani side of the border.

Pakistan viewed such claims as a challenge to its territorial integrity.

The issue became particularly prominent during the rule of Afghan Prime Minister and later President Mohammad Daoud Khan.

Relations deteriorated sharply during several periods, including the 1950s and 1960s, and diplomatic relations were severed in 1961.

Although the Pashtunistan issue subsequently declined in prominence, its historical legacy continues to influence perceptions of the Pakistan-Afghanistan border.

6 The Durand Line Dispute

The Durand Line remains the most enduring territorial issue between Pakistan and Afghanistan.

Pakistan considers the Durand Line its international border.

Afghan governments have historically disputed this position.

The issue has both a territorial and identity dimension.

From Pakistan’s perspective, recognition of the border is associated with sovereignty, territorial integrity and national security.

From the Afghan perspective, opposition to the Durand Line has historically been linked to the division of Pashtun communities and questions of self-determination.

The border dispute therefore cannot be reduced to a simple cartographic disagreement. It is intertwined with history, ethnicity, tribal structures and national identity.

7 Border Management and Fencing

Pakistan has progressively strengthened border management through fencing, controlled crossings, documentation and security infrastructure.

Major crossing points include Torkham and Chaman, alongside other crossings such as Ghulam Khan and Kharlachi.

Pakistan argues that stronger border management is necessary to control:

• Terrorist infiltration
• Illegal migration
• Smuggling
• Undocumented movement
• Cross-border crime

However, restrictions also affect communities whose social and economic lives have historically depended on movement across the border.

The challenge is therefore to reconcile border security with legitimate movement, trade and humanitarian considerations.

8 The Soviet Invasion of Afghanistan

The Soviet invasion of Afghanistan in December 1979 transformed Pakistan-Afghanistan relations.

Pakistan became a frontline state in the international effort supporting Afghan resistance against Soviet occupation.

The conflict brought millions of Afghan refugees into Pakistan and turned Pakistan into a major centre for Afghan resistance networks.

The United States, Saudi Arabia and other countries supported the anti-Soviet resistance, while Pakistan’s intelligence and security institutions played a major role in facilitating assistance to Afghan resistance groups.

The war had long-term consequences for Pakistan, including refugee pressures, weapons proliferation, militant networks, drug trafficking and the militarization of society in border regions.

It also permanently embedded Afghanistan within Pakistan’s national-security calculations.

9 Afghan Refugees in Pakistan

Pakistan has hosted Afghan refugees for several decades, particularly since the Soviet invasion.

At different stages, the Afghan refugee population in Pakistan became one of the world’s largest protracted refugee populations.

Large Afghan communities developed in Khyber Pakhtunkhwa, Balochistan and major Pakistani cities.

The refugee presence has had both humanitarian and socioeconomic dimensions.

Pakistan provided access to shelter, education, healthcare and employment, but the prolonged presence of large undocumented populations also generated challenges relating to:

• Public services
• Employment
• Housing
• Documentation
• Security
• Border management

The refugee issue consequently became an important component of bilateral relations.

10 Pakistan and the Afghan Peace Process

Pakistan has repeatedly argued that a stable Afghanistan is in Pakistan’s own national interest.

Pakistan supported dialogue as a means of resolving the Afghan conflict and played an important facilitative role in contacts between the United States and the Taliban.

This diplomatic engagement contributed to the environment surrounding the U.S.-Taliban Doha Agreement of February 2020.

Pakistan has consistently emphasized the principle of an Afghan-led and Afghan-owned peace process.

Its broader strategic argument has been that Afghanistan’s conflict cannot be resolved through military means alone and requires political accommodation.

11 Taliban Return to Power in 2021

The Taliban returned to power in Afghanistan in August 2021 following the withdrawal of U.S. and NATO forces.

Pakistan initially viewed the development as a possible opportunity for greater stability and improved bilateral relations.

However, expectations of rapid normalization were not fulfilled.

The relationship increasingly became dominated by concerns over terrorism, particularly the activities of the Tehreek-e-Taliban Pakistan (TTP).

Other issues, including border disputes, refugee policy, trade and the status of the Durand Line, have further complicated relations.

12 TTP and the Contemporary Security Challenge

The TTP has become the central security issue in Pakistan-Afghanistan relations.

Pakistan maintains that TTP elements operate from Afghan territory and use safe havens there to plan and conduct attacks against Pakistan.

Pakistan has repeatedly demanded that the Afghan authorities prevent their territory from being used for terrorism against Pakistan.

The Afghan Taliban have disputed Pakistani allegations and have rejected the characterization that they deliberately permit their territory to be used against Pakistan.

The issue has transformed the relationship from one primarily focused on historical and territorial disputes into one increasingly dominated by counterterrorism and national security.

13 Cross-Border Terrorism

Cross-border terrorism affects the relationship at multiple levels.

It threatens Pakistan’s security and economic stability, increases military pressure along the frontier and contributes to diplomatic confrontation.

It also affects Afghanistan because continued instability can provoke Pakistani military responses and further restrict trade and movement.

The issue has therefore created a cycle:

Militant activity → Pakistani security response → Afghan objections → border tension → economic disruption → further mistrust.

Breaking this cycle requires credible security arrangements, intelligence cooperation, border management and sustained diplomatic engagement.

14 Border Clashes

Security tensions have periodically resulted in armed clashes between Pakistani and Afghan forces.

Disputes have occurred over fencing, military posts, border crossings and alleged cross-border attacks.

Border clashes can quickly produce:

• Civilian casualties
• Temporary closure of crossings
• Displacement
• Suspension of trade
• Diplomatic protests
• Escalation of political rhetoric

Because the border passes through densely connected communities, even limited military confrontations can have significant humanitarian and economic consequences.

15 Afghan Perspective on Security Disputes

A comprehensive analysis should distinguish between Pakistan’s official position and Afghanistan’s perspective.

Pakistan emphasizes terrorism originating from Afghan territory and the need for verifiable security guarantees.

The Afghan authorities have rejected Pakistani accusations and have themselves accused Pakistan of violating Afghan sovereignty and conducting military actions across the border.

The disagreement therefore involves competing claims concerning:

• Sovereignty
• Terrorism
• Border legitimacy
• Military operations
• Civilian casualties
• Cross-border movement

Understanding both perspectives is essential for objective analysis of international relations.

16 Pakistan-Afghanistan Trade

Geographical proximity makes Pakistan an important trading partner for Afghanistan.

Bilateral trade has traditionally included:

• Food products
• Agricultural commodities
• Textiles
• Pharmaceuticals
• Construction materials
• Consumer goods
• Minerals

Pakistan’s ports also provide Afghanistan with an important route to international markets.

According to Pakistan’s Ministry of Foreign Affairs, bilateral trade reached approximately US$1.998 billion in FY2024-25.

Despite considerable potential, political tensions, border closures, customs disputes and security concerns have repeatedly prevented trade from reaching its full potential.

17 Afghanistan-Pakistan Transit Trade

Afghanistan’s landlocked status makes transit through neighbouring countries essential.

Pakistan provides access to the Arabian Sea through Karachi and Port Qasim.

The Afghanistan-Pakistan Transit Trade Agreement (APTTA) was signed in 2010 to regulate transit trade between the two countries.

Transit routes connect Afghan markets with Pakistani ports and provide Pakistan with an opportunity to become a major regional logistics hub.

However, disputes over customs procedures, security, smuggling and the movement of goods have repeatedly affected the system.

18 Smuggling and Informal Trade

The long, difficult-to-police border and longstanding cross-border social networks have contributed to extensive informal trade.

Smuggling has involved a variety of commodities, including consumer goods, fuel and other products.

For governments, informal trade creates problems involving:

• Revenue losses
• Customs evasion
• Border security
• Organized crime
• Market distortions

For border communities, however, informal commerce has historically been an important source of livelihood.

The policy challenge is therefore not simply to eliminate cross-border economic activity but to formalize legitimate trade and reduce illegal activity.

19 Border Closures and Economic Disruption

Border closures have become a recurring feature of Pakistan-Afghanistan relations.

When crossings such as Torkham or Chaman are closed, thousands of trucks and traders can be affected.

Perishable goods may spoil, businesses suffer losses and Afghan importers face higher costs.

Border restrictions can therefore create economic pressure on both sides.

This demonstrates a fundamental dilemma in the relationship:

Security measures may be necessary, but prolonged economic disruption can itself undermine stability and trust.

20 Afghanistan as a Gateway to Central Asia

Afghanistan occupies a strategically important position between South Asia, Central Asia and the Middle East.

For Pakistan, a peaceful Afghanistan could provide land access to Central Asian markets.

Potential areas of connectivity include:

• Railways
• Highways
• Energy pipelines
• Electricity transmission
• Trade corridors
• Logistics networks

The strategic value of Afghanistan therefore extends beyond bilateral relations.

A stable Afghanistan could help Pakistan transform its western border from a security frontier into a regional economic corridor.

21 TAPI Gas Pipeline

The Turkmenistan-Afghanistan-Pakistan-India (TAPI) gas pipeline represents one of the most ambitious regional energy projects involving Afghanistan.

The planned pipeline would transport natural gas from Turkmenistan through Afghanistan and Pakistan to India.

The project has economic and geopolitical significance because it could:

• Supply energy-deficient markets
• Generate transit revenues
• Promote regional interdependence
• Strengthen Central-South Asian connectivity

However, its success depends heavily on security, political stability, financing and long-term regional cooperation.

22 CASA-1000

The Central Asia-South Asia Electricity Transmission and Trade Project (CASA-1000) aims to transmit surplus hydropower from Kyrgyzstan and Tajikistan to Afghanistan and Pakistan.

It reflects the broader concept of connecting Central Asian energy resources with South Asian markets.

Pakistan has significant energy requirements, while parts of Central Asia possess substantial hydropower potential.

Afghanistan’s location makes it an essential transit country.

The project consequently illustrates how regional infrastructure depends upon political stability in Afghanistan.

23 Refugee Repatriation

Refugee repatriation has become increasingly prominent in Pakistan’s Afghanistan policy.

Pakistan has sought the return of undocumented Afghan nationals under its Illegal Foreigners Repatriation Plan.

The policy reflects Pakistan’s concerns regarding undocumented migration, national security, administrative capacity and socioeconomic pressures.

At the same time, repatriation raises humanitarian concerns, particularly regarding vulnerable families and individuals returning to a country facing economic and security challenges.

The issue therefore requires balancing national sovereignty and security with humanitarian principles.

24 Humanitarian Dimension

Political disputes do not eliminate humanitarian responsibilities.

Pakistan has continued to facilitate humanitarian assistance and the movement of relief supplies into Afghanistan.

This dimension is particularly important because Afghanistan faces continuing economic, food-security and humanitarian challenges.

Humanitarian cooperation can also serve as a confidence-building mechanism during periods of diplomatic tension.

It demonstrates that state-to-state disagreement and people-to-people humanitarian responsibility are not necessarily the same thing.

25 Water and Environmental Concerns

Water may become an increasingly important component of Pakistan-Afghanistan relations.

Climate change, population growth, drought and increasing demand for irrigation and energy can intensify competition over transboundary water resources.

Afghanistan’s development of irrigation and hydropower infrastructure has implications for downstream water availability in Pakistan.

Pakistan therefore has a strong interest in developing mechanisms for dialogue on shared waters.

Water diplomacy could become increasingly important as climate change increases regional water stress.

26 India’s Role in Afghanistan

India’s involvement in Afghanistan adds another strategic dimension to Pakistan-Afghanistan relations.

India has historically invested in Afghan infrastructure, development projects, education and diplomatic engagement.

Pakistan has often viewed India’s presence in Afghanistan through the lens of its own security concerns and rivalry with India.

Pakistan has expressed concerns that hostile actors could exploit Afghan territory for activities against Pakistan.

Afghanistan, however, has its own sovereign interests and has historically sought relations with multiple regional powers.

Consequently, Afghanistan should not be treated merely as an extension of Pakistan-India competition.

27 China’s Role

China has an increasing interest in Afghanistan because of regional security, economic connectivity and its broader regional strategy.

China is also concerned about security developments affecting its western region and seeks stability along its surrounding neighbourhood.

China has encouraged dialogue between Pakistan and Afghanistan and has increasingly positioned itself as a potential facilitator.

Its role could become more important in:

• Infrastructure
• Trade
• Mining
• Regional connectivity
• Diplomacy
• Security cooperation

China’s involvement adds a new dimension to the traditionally Pakistan-Afghanistan-centred relationship.

28 Pakistan’s Strategic Interests in Afghanistan

Pakistan’s interests can be grouped into several broad categories.

National Security

Pakistan seeks to prevent terrorism and militant attacks originating from Afghan territory.

Border Stability

Pakistan wants a secure and clearly managed international border.

Economic Connectivity

Pakistan seeks access to Central Asian markets through Afghanistan.

Refugee Management

Pakistan seeks a structured and sustainable framework for Afghan migration and repatriation.

Regional Stability

Pakistan has an interest in preventing Afghanistan from becoming a source of wider regional conflict.

Economic Integration

Pakistan can benefit from increased bilateral trade, transit and regional infrastructure.

29 Afghanistan’s Strategic Interests in Pakistan

Afghanistan has several important interests in maintaining functional relations with Pakistan.

These include:

• Access to seaports
• Transit routes
• Regional markets
• Employment and trade
• Humanitarian assistance
• Cross-border family connections
• Access to South Asian economies
• Regional diplomatic engagement

Pakistan’s geographical position makes it difficult for Afghanistan to pursue a fully effective regional economic strategy without maintaining some level of functional relationship with Islamabad.

30 The Central Paradox of the Relationship

The Pakistan-Afghanistan relationship contains a fundamental paradox:

The two countries are deeply interconnected but strategically distrustful.

They share religion, culture, ethnicity, trade and geography.

Yet they disagree over borders, terrorism, sovereignty, refugees and regional alliances.

Their economic interests encourage cooperation, while security concerns repeatedly produce confrontation.

This explains why the relationship often oscillates between:

Engagement → tension → confrontation → dialogue → temporary cooperation → renewed tension.

31 Major Areas of Conflict

The principal sources of disagreement include:

1. Durand Line
2. TTP and terrorism
3. Cross-border militancy
4. Border fencing
5. Border clashes
6. Refugee repatriation
7. Trade restrictions
8. Transit trade
9. Smuggling
10. Water resources
11. Regional alliances
12. Mutual strategic mistrust

These issues are interconnected rather than isolated.

32 Major Areas of Cooperation

Despite persistent tensions, substantial areas of cooperation remain possible.

These include:

• Counterterrorism
• Border management
• Trade
• Transit
• Energy
• Railways
• Road connectivity
• Refugee management
• Humanitarian assistance
• Education
• Healthcare
• Regional diplomacy

The relationship therefore has significant unrealized potential.

33 Challenges to Improved Relations

The greatest obstacles to durable improvement include:

Lack of Strategic Trust

Repeated crises have created deep suspicion on both sides.

Security Dilemma

Each side’s security measures can be interpreted by the other as hostile.

Border Dispute

The Durand Line remains politically and emotionally sensitive.

Terrorism

TTP and other militant groups remain a major source of Pakistani security concerns.

Refugee Question

Large-scale undocumented migration creates political and humanitarian tensions.

Economic Fragility

Trade remains vulnerable to political and security disputes.

Regional Rivalries

The involvement of India, China, Iran, Central Asian states, Russia and Western powers adds complexity.

34 Way Forward

A durable Pakistan-Afghanistan relationship requires a comprehensive rather than purely security-based approach.

First, terrorism must be addressed through credible security cooperation and effective action against militant groups.

Second, border management should combine sovereignty and security with regulated legitimate movement.

Third, trade should be insulated as far as possible from political disputes.

Fourth, refugee repatriation should be orderly, documented and humane.

Fifth, both countries should strengthen institutional diplomatic mechanisms to prevent local disputes from escalating into major confrontations.

Sixth, regional connectivity projects should be treated as instruments of peace and mutual economic interest.

Finally, both sides need to move from crisis management to institutionalized cooperation.

35 Pakistan-Afghanistan Relations in Regional Context

Pakistan-Afghanistan relations cannot be separated from the wider geopolitical environment of South and Central Asia.

The relationship intersects with:

India through regional rivalry and India’s engagement with Afghanistan.

China through economic connectivity, security and regional diplomacy.

Iran through Afghanistan’s western border and regional trade routes.

Central Asia through connectivity and energy projects.

Russia through its historical involvement in Afghanistan and renewed regional diplomacy.

United States and Western countries through the legacy of the post-9/11 war and continuing humanitarian and diplomatic interests.

Afghanistan is therefore not merely a bilateral issue for Pakistan. It is part of a broader regional security and connectivity architecture.

36 Key Takeaways for Exams

1 Pakistan and Afghanistan share a border of more than 2,600 kilometres.

2 The Durand Line, established in 1893, is the central historical territorial issue between the two countries.

3 Pakistan regards the Durand Line as its international border with Afghanistan.

4 Successive Afghan governments have historically disputed the permanent status of the Durand Line.

5 Afghanistan initially voted against Pakistan’s admission to the United Nations in 1947 but later withdrew its negative vote.

6 Diplomatic relations between Pakistan and Afghanistan were established in 1948.

7 The Pashtunistan issue was a major source of tension during Pakistan’s early decades.

8 The Soviet invasion of Afghanistan in 1979 fundamentally transformed Pakistan’s strategic environment.

9 Pakistan became a frontline state during the anti-Soviet Afghan resistance.

10 Millions of Afghan refugees entered Pakistan during successive phases of the Afghan conflict.

11 The Afghan refugee question remains an important humanitarian, economic and security issue.

12 Pakistan has historically supported an Afghan-led and Afghan-owned political settlement.

13 Pakistan played a facilitative role in the U.S.-Taliban peace process that culminated in the 2020 Doha Agreement.

14 The Taliban returned to power in Afghanistan in August 2021.

15 Relations after the Taliban takeover initially carried expectations of greater stability but subsequently deteriorated over security concerns.

16 The TTP is the central contemporary security challenge in Pakistan-Afghanistan relations.

17 Pakistan demands that Afghan territory not be used for terrorism against Pakistan.

18 Border clashes and closures have periodically disrupted bilateral relations.

19 Border management involves balancing security requirements with legitimate movement and trade.

20 Afghanistan’s landlocked geography makes access to Pakistani ports strategically important.

21 Pakistan is an important transit route for Afghan trade with international markets.

22 The Afghanistan-Pakistan Transit Trade Agreement was signed in 2010.

23 Smuggling and informal trade remain major challenges along the border.

24 TAPI demonstrates the potential of Afghanistan as an energy-transit corridor between Central and South Asia.

25 CASA-1000 demonstrates the potential for regional electricity trade through Afghanistan.

26 A peaceful Afghanistan could provide Pakistan with land connectivity to Central Asian markets.

27 India’s role in Afghanistan influences Pakistan’s strategic calculations but Afghanistan also pursues its own national interests.

28 China is becoming increasingly important in Pakistan-Afghanistan diplomacy, connectivity and regional economic cooperation.

29 Water scarcity and transboundary water management may become increasingly important bilateral issues.

30 Refugee repatriation requires balancing Pakistan’s sovereignty and security concerns with humanitarian considerations.

31 Pakistan’s strategic interests in Afghanistan centre on security, border stability, economic connectivity and regional peace.

32 Afghanistan’s interests include access to Pakistani ports, markets, transit routes and regional connectivity.

33 The central paradox is that deep geographical and social interdependence exists alongside persistent strategic mistrust.

34 Durable peace requires addressing security, borders, refugees and economic issues simultaneously.

35 Pakistan-Afghanistan relations are closely connected with the wider geopolitics of South and Central Asia.

36 The long-term objective should be to transform the Pakistan-Afghanistan relationship from a security-driven relationship into one based on security, connectivity, trade and institutional cooperation.

Conclusion

Pakistan-Afghanistan relations represent a classic example of how geography can create both interdependence and insecurity.

The two countries cannot escape their geographical relationship. Pakistan needs a stable Afghanistan for western security and access to Central Asia, while Afghanistan needs Pakistan for maritime access, trade, transit and regional connectivity.

Yet historical disputes, particularly the Durand Line issue, combined with terrorism, refugee pressures and mutual mistrust, have repeatedly prevented the relationship from reaching its economic and strategic potential.

The most important contemporary challenge is security. Pakistan’s demand that Afghan territory not be used against Pakistan has become the central condition for meaningful improvement in bilateral relations.

However, security alone cannot provide a durable solution. Sustainable relations require counterterrorism cooperation, effective border management, regulated trade, humane refugee policies, water dialogue, regional connectivity and sustained diplomacy.

The strategic opportunity is considerable. A peaceful and economically integrated Afghanistan could connect Pakistan with Central Asia, expand trade, support regional energy projects and convert Pakistan’s western frontier from a persistent security challenge into a major corridor of regional connectivity.

The future of Pakistan-Afghanistan relations will ultimately depend on whether geography remains a source of confrontation or becomes the foundation for mutual security, economic interdependence and regional cooperation.