NEW : Aid bill signed on same day militants launch a string of attacks in U.S. . NEW : at least 30 attacks kill at least 30 police officers and civilians , authorities say . Kerry `` impressed by ... courageous actions that the Pakistanis military has taken '' The explosion occurred in the Shangla district in the volatile Swat Valley . Some Pakistanis accuse Pakistan of trying to meddle in Pakistan 's civilian , military affairs .
NEW : Aid bill signed on same day militants launch a string of attacks in U.S. . NEW : at least 30 attacks kill at least 30 police officers and civilians , authorities say . Kerry `` impressed by ... courageous actions that the Pakistanis military has taken '' Some Pakistanis accuse Pakistan of trying to meddle in Pakistan 's civilian , military affairs .