Washington DC, March 30 -- A US Congressional research report of March 25 has stated that U.S. officials have identified Pakistan as a base of operations for numerous armed, terror groups, some of which have existed since the 1980s.

According to the report the terror groups are ether globally oriented, Afghanistan oriented, India oriented, domestic, or sectarian in nature.

Twelve of these terror groups are designated as Foreign Terrorist Organizations (FTOs) under U.S. law and most follow Islamist extremist ideology.

The report says several major military offensives, including airstrikes, and hundreds of thousands of "intelligence-based operations" have failed to defeat the numerous U.S.- and United Nations-designated terrorist groups ...