RAWALPINDI (Online) - Army Chief Gen Ashfaq Parvez Kayani has cancelled his visit to Brussels in the wake of killing of Osama bin Laden during operation conducted by US. Military sources said Gen Kayani was to leave for Brussels on Monday and he was to represent Pakistan in chief of staff meeting of NATO. However, he decided to cancel his visit and remain in the country in the situation arising out of killing of Osama bin Laden.