20 Pak troops killed in attack on army convoy 

At least 20 Pakistani soldiers were killed on Sunday when an explosion hit an army convoy in the northwestern region of Bannu, intelligence and military sources said. At least two dozen others were wounded in the attack in a town near North Waziristan, a lawless Pakistani region on the Afghan border where many militant groups are holed up in remote mountain camps. "It's not clear if it was a suicide attack or an improvised explosive device," said an militar