Known as 'terror hub' Pakistan witnessed a dramatic increase in terror strikes ever since terror head Osama bin Laden was killed in the country on May 2, 2011, with the most horrific incident of serious security breach taking place at a Pakistani Naval Base in Karachi. The base was attacked by heavily armed insurgents on May 22, 2011.
The 16-hour battle, left 10 military personnel dead. Terror group Taliban claimed responsibility for the attacks.