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Islamic State–Taliban conflict

2015–present armed conflict in Afghanistan

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The conflict began in 2015 following the creation of the Islamic State – Khorasan Province (IS-KP), a regional branch of the Islamic State. IS-KP and the Taliban started to clash over control of territory during the war in Afghanistan (2001–2021), mostly in eastern Afghanistan but also through cells in the north-west and south-west. The Haqqani network, al-Qaeda and others supported the Taliban, while IS was supported by the Mullah Dadullah Front and the pro-ISIS faction of the Islamic Movement of Uzbekistan. IS-KP had lost territory to both the Taliban and the former republican government, with American support, by 2020. Following the Taliban capture of Kabul in 2021, IS-KP have continued its insurgent attacks against the new Taliban regime.

As of October 2024 IS-KP is the largest and most powerful of the terror groups active in Afghanistan, with the Taliban appearing to view IS-KP as the primary threat to their rule. As of June 2026, BBC Monitoring reported that IS-KP is severely crippled and only a "shadow of its former self.'

Background

During the original stint in power of the Islamic Emirate of Afghanistan in the late 1990s, the ruling Taliban had pursued a policy of suppressing Salafism; motivated by strict Deobandi tenets. During this period, the main issue of Salafist scholars was that Taliban was led by Maturidi Sufis. As a result of the unofficial Taliban bans on Ahl-i Hadith during the 1996–2001 era, several Salafis had shifted to Peshawar. However, after the US-led invasion of Afghanistan in 2001, Taliban and Ahl-i Hadith allied to wage a common Jihad to resist the invasion. The Afghan Salafists decided to put aside their differences with the Taliban to join them in the "greater jihad" against the United States. Several Arab Salafis in Al-Qaeda rank and file would mediate the disputes between Afghan Salafists and Taliban; enabling them to unify for the more important religious duty of fighting against the U.S and its allies in Afghanistan. Many Salafi commanders and Ahl-i Hadith organisations participated in the Taliban insurgency (2001–2021) under Afghan Taliban's command.

During the Taliban insurgency, in January 2015, IS established itself in Khorasan and formed IS-K. The main objective of IS-K was to occupy the land of Khorasan, which includes the country of Afghanistan. Even though the initial IS-K was formed by Taliban as well as Tehrik-i-Taliban Pakistan (TTP) defectors and thus ideologically similar, it became dominated by Salafists. The disgruntled members of TTP would establish IS-KP and shifted to the Nangarhar province. After its founding Pakistani leaders who defected from TTP were killed in US drone strikes, Afghan Salafists took charge of TTP. The conflict escalated when militants affiliated with IS-KP killed Abdul Ghani, a senior Taliban commander in Logar Province on 2 February 2015.

The emergence of IS-K provided militant Afghan Salafists with an opportunity to set up a rival force, although Salafist support for the group waned as it proved ideologically "too extreme and brutal" for most Afghan Salafis. As a result, the majority of Afghan Salafis have remained supportive of the Taliban. In March 2020, major Pashtun Ahl-i Hadith ulema convened in Peshawar under the leadership of Shaikh Abdul Aziz Nooristani and Haji Hayatullah to pledge Bay'ah (oath of loyalty) to the Taliban and publicly condemn IS-K. The scholars also requested protection from the Afghan Taliban for the Ahl-i Hadith community.

After Taliban victory in the War in Afghanistan and restoration of the Islamic Emirate, hundreds of Ahl-i Hadith ulema would gather to announce their Bay'ah (pledge of allegiance) to the Islamic Emirate of Afghanistan. Numerous Ahl-i Hadith clerics and their representatives held gatherings across various provinces of Afghanistan to re-affirm their backing of the Taliban and officially declare their support to the Taliban crackdown on IS-K. Several members of the Afghan intelligence agency and the Afghan national army have also joined the Islamic State – Khorasan Province. The High Council of the Islamic Emirate of Afghanistan, previously a breakaway Taliban faction, announced that they have pledged allegiance to the Taliban and will dissolve. In February 2022, Pakistani officials acknowledged that ongoing violence was destabilizing the region.

Opposing forces

By 2016 IS-K mostly consisted of eastern Afghans, Pakistanis, and foreign fighters from Central Asia. The latter were mainly former members of the Islamic Jihad Union and the Turkistan Islamic Party. In addition, there were a small number of Arabs. Throughout its existence, IS-K has operated in a very limited area, mainly concentrated in select provinces in eastern Afghanistan, most importantly Nangarhar and Kunar. By 2016, it had appointed shadow governors in other regions as well, but not exerted much influence outside its traditional bases. The group is known to receive support by the Islamic State's central command in form of money and combat trainers from Iraq and Syria. IS-K's combat strength has fluctuated greatly over the years, but has mostly remained in the low thousands.

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