FILE - In this March 20, 2009, file photo, U.S. Army soldiers stroll past two bronze busts of former Iraqi President Saddam Hussein in the Green Zone in Baghdad, Iraq. Under its leader, Iraqi jihadi Abu Bakr al-Baghdadi, the Islamic State group's top command is dominated by former officers from Saddam's military and intelligence agencies, according to senior Iraqi officers and top intelligence officials. (AP Photo/Hadi Mizban, File)