Finally, some clarity.
The New York Times provides the history of U.S. concern over Iran’s role in Iraq, reporting that in July, 2005, the U.S. sent a diplomatic protest to Iran over the use of allegedly Iranian-made explosives (EFPs) being used against coalition troops in Iraq by Shiite groups.
This is a companion discussion topic for the original entry at https://talkingpointsmemo.com/?p=181168