Afghanistan and Regional Security

Introduction

Afghanistan occupies a strategically important position at the intersection of South Asia, Central Asia and the broader Middle East. Its geography has historically connected major regional powers, trade routes and political spheres of influence.

Afghanistan’s regional importance derives from its location, borders, security environment, ethnic and social connections across neighbouring states, migration patterns, economic potential and proximity to major strategic regions.

The country’s security situation has consequences for Pakistan, Iran, China, the Central Asian states, India and the wider international community. The United Nations continues to treat the situation in Afghanistan as a matter affecting international peace and security, with Security Council resolutions and Secretary-General reports addressing the country during 2026.

Afghanistan’s Strategic Geography

Afghanistan is landlocked but occupies a strategically significant geographical position.

It borders:

• Pakistan
• Iran
• Turkmenistan
• Uzbekistan
• Tajikistan
• China

Its location creates potential connections between:

• South Asia
• Central Asia
• China
• Iran
• the wider Middle East

Geostrategic location refers to the strategic significance of a country’s geographical position in relation to surrounding regions, transport routes and security interests.

The Afghan Security Complex

Afghan security complex refers to the interconnected security problems affecting Afghanistan and its neighbours.

These include:

• terrorism
• violent extremism
• border security
• refugee movements
• narcotics trafficking
• organized crime
• humanitarian crises
• economic instability
• political recognition
• regional competition

Security developments in Afghanistan can therefore produce effects beyond its borders.

Afghanistan and Pakistan

Pakistan and Afghanistan share a long and complex relationship based on:

• geographical proximity
• ethnic and tribal connections
• trade
• migration
• security
• historical interaction
• border management

The Afghanistan-Pakistan border is one of the most sensitive security environments in the region.

Cross-border militancy and disputes over border management have periodically produced serious tensions.

The United Nations reported cross-border clashes between Afghan de facto security forces and Pakistani security forces in early 2026 and emphasized the humanitarian consequences for civilians.

Border Security

Border security refers to measures taken by states to control movement across international boundaries and prevent threats such as terrorism, smuggling and unauthorized migration.

Important border-security instruments include:

• border fencing
• border checkpoints
• biometric systems
• patrols
• intelligence sharing
• customs controls
• legal crossing points

Border security can become controversial when neighbouring states disagree over the status, demarcation or management of a boundary.

Afghanistan and Central Asia

Afghanistan shares borders with three Central Asian states:

• Turkmenistan
• Uzbekistan
• Tajikistan

Central Asian states have security concerns involving:

• terrorism
• extremist movements
• drug trafficking
• refugee flows
• border instability
• water resources
• trade connectivity

The United Nations and regional organizations have emphasized cooperation between Central Asian states concerning terrorism, border security and threats associated with developments in Afghanistan.

Afghanistan and China

China shares a short border with Afghanistan through the Wakhan Corridor.

China’s interests include:

• regional stability
• terrorism prevention
• border security
• economic connectivity
• relations with Pakistan
• Central Asian stability

China has also participated in diplomatic efforts involving Afghanistan and Pakistan. In 2026, China stated at the UN that it had used its channels to encourage dialogue between Pakistan and Afghanistan.

Afghanistan and Iran

Iran shares a substantial border with Afghanistan.

Major areas of concern include:

• refugees
• water resources
• border security
• narcotics
• trade
• religious and cultural connections
• economic relations

The Helmand River is particularly significant because Afghanistan and Iran share interests and disagreements concerning its waters.

Afghanistan and India

India has historically maintained economic, development and diplomatic interests in Afghanistan.

Indian engagement has included:

• infrastructure
• education
• humanitarian assistance
• development projects
• diplomatic engagement

Afghanistan also provides India with a potential geographical connection toward Central Asia, although Pakistan’s geography limits direct overland access.

Terrorism and Afghanistan

Terrorism remains one of the major international security concerns associated with Afghanistan.

Terrorist sanctuary refers to territory where a terrorist organization is able to operate, recruit, train, finance or plan activities with limited effective disruption.

Cross-border terrorism refers to terrorist activity involving movement, support, planning or operations across international borders.

The international community has continued to monitor terrorist threats associated with Afghanistan, including the activities of ISIL-K and other armed groups.

Refugees and Migration

Afghanistan has experienced prolonged displacement resulting from conflict, insecurity and economic hardship.

Forced migration occurs when people are compelled to leave their homes because of conflict, persecution, disasters or other serious threats.

Pakistan and Iran have historically hosted large Afghan refugee populations.

The 2026 UN response plan anticipated substantial numbers of Afghan nationals returning from Pakistan and Iran and identified reintegration, housing, health, education and livelihoods as major needs.

Afghanistan and Regional Connectivity

Afghanistan has potential importance for regional connectivity because it can serve as a geographical bridge between:

• Central Asia and South Asia
• Central Asia and Pakistani ports
• Iran and Central Asia
• China and Central Asia

Transit state refers to a country through which goods, energy or people move between other markets.

Transit trade can provide revenue and create incentives for regional cooperation.

Energy Connectivity

Afghanistan has been considered for regional energy projects involving:

• electricity transmission
• gas pipelines
• transport infrastructure

The TAPI pipeline refers to the Turkmenistan-Afghanistan-Pakistan-India natural gas pipeline project.

Its strategic significance lies in the potential integration of Central Asian energy resources with South Asian markets.

Humanitarian Security

Human security focuses on threats to individuals and communities rather than only threats to states.

Afghanistan’s humanitarian challenges involve:

• food insecurity
• health
• education
• displacement
• employment
• poverty
• access to basic services

This illustrates the difference between traditional security and human security.

Regional Diplomacy

Afghanistan is addressed through several diplomatic frameworks involving:

• United Nations
• neighbouring states
• Shanghai Cooperation Organization
• regional states
• humanitarian organizations
• international partners

The Doha process is a diplomatic framework involving international engagement concerning Afghanistan.

Regional diplomacy refers to diplomatic interaction among states sharing a geographical region and common security concerns.

Key Distinctions

Afghanistan as a regional issue vs domestic issue: Afghanistan’s internal developments have consequences for neighbouring states and therefore constitute both domestic and regional security concerns.

Border security vs territorial dispute: Border security concerns management and protection of a boundary, while a territorial dispute concerns competing claims over territory.

Human security vs national security: Human security focuses on individuals and communities, while national security focuses primarily on the security of the state.

Transit state vs landlocked state: A landlocked state lacks direct access to the sea. A transit state serves as a route connecting other countries or markets.

Key Terms at a Glance

• Afghanistan
• Regional security
• Strategic geography
• Border security
• Cross-border terrorism
• Terrorist sanctuary
• Central Asian security
• Human security
• Forced migration
• Afghan refugees
• Regional connectivity
• Transit trade
• TAPI
• Helmand River
• Doha process
• Regional diplomacy
• Narcotics trafficking
• Security complex

Related Glossaries

• 9.1 International and National Security
• 9.2 Human Security and Non-Traditional Security
• 10.4 Insurgency, Counterinsurgency and Terrorism
• 10.5 Conflict Prevention, Management and Resolution
• 12.2 Geostrategy and Strategic Geography
• 12.4 Chokepoints, Corridors and Strategic Locations
• 15.1 South Asia: Regional Concepts and Institutions
• 15.2 India-Pakistan Relations
• 15.5 China-Pakistan Relations and CPEC
• 16.6 Central Asia and Eurasian Geopolitics

Conclusion

Afghanistan’s strategic importance comes from the interaction between geography, security, regional connectivity and political instability. Its location connects South Asia with Central Asia and places it within the strategic calculations of Pakistan, Iran, China, India and other regional actors.

Understanding Afghanistan therefore requires studying both its internal security environment and its wider regional consequences.