As tensions simmer between U.S. and Iran, Iraq is feeling the heat

Of the many proxy battlegrounds between Iran and the U.S., Iraq is one of the most overlooked, at least outside the Middle East.But U.S. reaction to the reappearance on the political scene of former Iraqi prime minister Nouri al-Maliki - a candidate for the job once more - is a sharp reminder of the tightrope Iraq walks between the two.