Suspected U.S. drones fired missiles into a Pakistani tribal region on Friday, killing 12 people, including five foreigners, in an area known as a stronghold of Pakistani Taliban commander Baitullah Mehsud. Pakistani officials said the attack targeted a house in a remote village on the border between North and South Waziristan, where Mehsud, an al Qaeda ally, has been bottled up by Pakistani forces since early this year. Frustrated by fighters from Pakistan fuelling the Taliban insurgency in Afghanistan and fearful of al Qaeda regrouping, U.S. forces have intensified missile attacks by pilotless drones since early September, security sources say....