ISI

Inter-Services Intelligence or ISI), is Pakistan's premier intelligence agency, responsible for providing critical national security intelligence assessment to the Government of Pakistan. The ISI headquarters are in Islamabad. The complex consists of various adobe building separated by lawns and fountains. The entrance to the complex is next to a private hospital.
Pakistan's military intelligence agency, the Inter-Services Intelligence (ISI), has long faced accusations of meddling in the affairs of its neighbors. A range of officials inside and outside Pakistan have stepped up suggestions of links between the ISI and terrorist groups in recent years.In June 2008, Afghan officials accused Pakistan's intelligence service of plotting a failed assassination attempt on President Hamid Karzai; shortly thereafter, they implied the ISI's involvement in a July 2008 attack on the Indian embassy.Indian officials also blamed the ISI for the bombing of the Indian embassy. Pakistani officials have denied such a connection.
In a May 2009 interview with CNN, he remarked all intelligence agencies have their sources in militant organizations but that does not translate to support. "Does that mean CIA has direct links with al-Qaeda? No, they have their sources. We have our sources. Everybody has sources."
Indian officials implicated the ISI for the November 2008 terrorist attacks in Mumbai that killed nearly two hundred people. India's foreign ministry said the ISI had links (Reuters) to the planners of the attacks, the banned militant group Lashkar-e-Taiba, which New Delhi blames for the assault. Islamabad denies allegations of any official involvement, but acknowledged in February 2009 that the attack was launched and partly planned (AP) from Pakistan. The Pakistani government has also detained several Islamist leaders, some of them named by India as planners of the Mumbai assault. Gannon says this is an unusual step by Pakistan, which never got enough credit in India because the country was in the middle of a national election. "I don't see any evidence" to believe that the ISI was behind the Mumbai attack, she says. However, she doubts the agency has severed all its ties with groups like Lashkar-e-Taiba which it supported to fight in Indian-administered Kashmir. Indian officials also claim to have evidence that the ISI planned the July 2006 bombing of the Mumbai commuter trains, but these charges seem unlikely to some observers of the long, difficult India-Pakistan relationship. The two nations have a history of finger-pointing, and while some of the allegations hold water, there is a tendency to exaggerate.
Following the release of the British report regarding its July 7, 2005, bombings of London's mass transit system--which London insists is not a statement of policy--Weinbaum said it makes "too broad a statement." Though Pakistan does offer safe haven to Kashmiri groups, and perhaps some Taliban fighters, the suggestion that the ISI is responsible for the 7/7 bombings is "a real stretch," Gannon says.