A small bomb exploded Friday near a house owned by Afghan President Hamid Karzai in the Pakistani city of Quetta, killing a boy who was sifting through a pile of garbage, police said. None of Karzai’s family were in at home when the bomb went off, around 20 yards from the house where Karzai lived during years of exile from his homeland. The southwestern city of Quetta has a history of bomb blasts and rocket attacks blamed mainly on tribal feuds. Full Story