A suicide bomber exploded his vest inside a house in central Iraq, killing four tribal leaders spearheading the fight against Al-Qaeda in Diyala province, police and the US military said Saturday. The attack took place Friday evening in the home of Sheikh Taha al-Obeidi in the village of Dojemah, near the town of Khalis about 50 kilometres (30 miles) north of Baghdad, Khalis police official Lieutenant Colonel Mohammed al-Obeidi said. Full Story