(Anmar Khalil | AP file photo) In this May 29, 2016 file photo, Iraqi security forces and allied Popular Mobilization forces fire artillery during fight against Islamic State militants in Fallujah, Iraq. When U.S. Secretary of State Mike Pompeo sat down with Iraqi officials in Baghdad earlier this month as tensions were mounting between the U.S. and Iran, he delivered a nuanced message: If you're not going to stand with us, stand aside.