"A department of the Iraqi prime minister's office is playing a leading role in the arrest and removal of senior Iraqi army and national police officers, some of whom had apparently worked too aggressively to combat violent Shiite militias, according to U.S. military officials in Baghdad. Since March 1, at least 16 army and national police commanders have been fired, detained or pressured to resign; at least nine of them are Sunnis, according to U.S. military documents shown to The Washington Post."