Iran’s Defense Minister Brigadier General Mostafa Mohammad Najjar, heading a high-ranking delegation, left Tehran for Armenia on Tuesday.

Six U.S. troops were killed in Iraq on Monday, making 2007 the deadliest for the American military in the Iraq war.   

Iran said it had drawn up a plan to restore stability to Iraq, including suggestions for the expulsion of private security firms and the integration of militias into the security forces.