Ahmed Rashid , a noted Pakistani journalist , has accused Pakistan 's ISI of providing help to the Taliban . Author Ted Galen Carpenter echoed that statement , stating that Pakistan " ... assisted rebel forces in Kashmir even though those groups have committed terrorist acts against civilians " Author Gordon Thomas stated that whilst aiding in the capture of al-Qaeda members , Pakistan " still sponsored terrorist groups in the disputed state of Kashmir , funding , training and arming them in their war on attrition against India . " Journalist Stephen Schwartz notes that several militant and criminal groups are " backed by senior officers in the Pakistani army , the country 's ISI intelligence establishment and other armed bodies of the state . " According to one author , Daniel Byman , " Pakistan is probably today 's most active sponsor of terrorism . " The Inter-Services Intelligence has often been accused of playing a role in major terrorist attacks across the world including the September 11 , 2001 attacks in the United States , terrorism in Kashmir , Mumbai Train Bombings , Indian Parliament Attack , Varnasi bombings , Hyderabad bombings and Mumbai terror attacks . The ISI is also accused of supporting Taliban forces and recruiting and training mujahideen to fight in Afghanistan and Kashmir . Based on communication intercepts US intelligence agencies concluded Pakistan 's ISI was behind the attack on the Indian embassy in Kabul on July 7 , 2008 , a charge that the governments of India and Afghanistan had laid previously . Afghan President Hamid Karzai , who has constantly reiterated allegations that militants operating training camps in Pakistan have used it as a launch platform to attack targets in Afghanistan , urged western military allies to target extremist hideouts in neighbouring Pakistan . When the United States , during the Clinton administration , targeted al-Qaeda camps in Afghanistan with cruise missiles , '' Slate '' reported that two officers of the ISI were killed
Varnasi bombings
2006 Varanasi bombings
State-sponsored terrorism