Mehdi Army fighters loyal to Shi'ite cleric Moqtada al-Sadr march during a military-style training in the holy city of Najaf, June 16, 2014. The United States said it could launch air strikes and act ... more 
Mehdi Army fighters loyal to Shi'ite cleric Moqtada al-Sadr march during a military-style training in the holy city of Najaf, June 16, 2014. The United States said it could launch air strikes and act jointly with its arch-enemy Iran to support the Iraqi government, after a rampage by Sunni Islamist insurgents across Iraq that has scrambled alliances in the Middle East. REUTERS/Ahmad Mousa (IRAQ - Tags: CIVIL UNREST POLITICS) less 
1 / 11
Reuters | Photo By STRINGER/IRAQ / REUTERS
Mon, Jun 16, 2014 2:31 PM EDT