23 June 2026

Pakistan's U.S.–Iran Diplomacy Sought to Prevent a Militant Spillover

Jamestown Foundation  |  Rahim Nasar

Pakistan's diplomacy during the U.S.–Iran conflict aimed to prevent a militant spillover, driven by a desire to avoid a security vacuum along its roughly 900-kilometer (about 559-mile) border with Iran. Islamabad fears a weakened Iranian state would create operational space for Baloch separatists like the Baloch Liberation Army (BLA) and Baloch Liberation Front (BLF), sectarian militants such as Jaish al-Adl, smugglers, and transnational jihadist actors in its southwest.

This concern is compounded by simultaneous pressure from Tehrik-e-Taliban Pakistan (TTP), Ittehad-ul-Mujahideen Pakistan (IMP), and Islamic State-Pakistan Province (ISPP)-linked militancy on the Afghan frontier. Sustaining a stable Iranian security apparatus is a strategic counterterrorism priority for Pakistan, which views Iranian fragility as a threat multiplier that could strain its military with a dual-front problem, complicate security around Gwadar port and the China-Pakistan Economic Corridor (CPEC), and allow hostile intelligence actors to exploit disorder.

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