From the Summary: "Iran is actively assisting the major Shiite Muslim political factions in Iraq, most of which have longstanding ideological, political, and religious sectarian ties to Tehran. A more pressing U.S. concern is that Iran is purportedly arming militias fielded by those factions, militias that are committing sectarian violence and attacking U.S. forces. The Administration is trying to reverse Iranian influence in Iraq while also engaging Iran diplomatically on Iraq. This report will be updated. See CRS [Congressional Research Service] Report RL32048, 'Iran: U.S. Concerns and Policy Responses.'"
CRS Report for Congress, RS22323