A Pakistan Army delegation cancelled its scheduled visit to the United States, the country\'\'s army announced on Sunday. The move comes in the wake of a NATO attack that left 24 soldiers killed in Mohmand tribal region in North-west Pakistan . A 15-member delegation of Joint Staff Headquarters was due to leave for the US on an official visit. Lt-Gen Muhammad Asif was to lead the delegation. Pakistan has already decided not to attend the upcoming Bonn conference. (QNA) f l