Two suicide bombers blew themselves up in a crowd of army recruits Tuesday in an Iraqi province where devastating attacks persist despite security improvements in the rest of the country. At least 28 people died, the Iraqi police and military said. The bombings came ahead of what Iraqi military officials have described as an imminent offensive in troubled Diyala province, northeast of Baghdad. The US military said it would support that effort, which they called an enhancement of existing patrols and actions there. Violence also flared in the northern city of Mosul, where a dozen people died in bombings that targeted the Iraqi army and police on Tuesday, the U.S. military said. The blasts at the Saad military camp in Baqouba, the capital of Diyala, recalled the scenes of mass terror and grief that were almost a daily routine in previous years. Violence in Iraq is at its lowest level in about four years.