Ambulances arrive at the scene of a deadly bombing that killed at least eight Shi'ite Muslims in the Pakistani city of Rawalpindi.<br/> <br />Yesterday's blast ripped through a procession, also injuring around 25 children.<br/> <br />Angry bystanders gather around the site just hours after two more bombs killed at least three people in commercial hub Karachi.<br/> <br />Most of Pakistan's bombings are blamed on Sunni militants with al Qaeda links, who do not believe Pakistan's Shi'ite minority are true Muslims.<br/> <br />Pakistan's military has been unable to prevent the attacks, despite renewed offensives against strongholds in the northwest.<br/> <br />The attacks undermine Pakistan's security as it prepares to host a summit of eight developing nations aimed at boosting trade and investment.
