Gunmen in 10 army-type vehicles shot dead a Sunni Arab tribal chief and four of his sons in a pre-dawn raid in Baghdad on Wednesday while two officials died in other attacks in the Iraqi capital, police said. The gunmen, wearing army uniforms, burst into Sheikh Fadel Sarhid Ali's home in the southeast of the city around 4 am (0100 GMT) and shot the tribal leader and his sons before escaping. Both Sunni and Shiite religious and political leaders are regularly targeted by death squads in Iraq. Radi Ismail Jawad, a high ranking offiical at the industry ministry, was...