Interesting report suggests that the suicide bombers weren't just yokels from some shit stain of a pakistani village:
A working theory, according to this American source, is that
Al Qaeda or affiliated jihadist groups had effectively suborned at least one unit of Pakistan's Special Services Group, the country's equivalent of Britain's elite SAS commandos. This official, however, stressed this was just a theory at this point. Other theories include that the assassins were trained by Qaeda or were from other military services, or the possibility that the assassins were retired Pakistani special forces.
The attack yesterday at Rawalpindi bore the hallmarks of a sophisticated military operation. At first, Bhutto's rally was hit by a suicide bomb that turned out to be a decoy. According to press reports and a situation report of the incident relayed to The New York Sun by an American intelligence officer, Bhutto's armored limousine was shot by multiple snipers whose armor-piercing bullets penetrated the vehicle, hitting the former premier five times in the head, chest, and neck. Two of the snipers then detonated themselves shortly after the shooting, according to the situation report, while being pursued by local police.
http://www.nysun.com/article/68672