ISIS extremists killed in Iraqi-US operation
Operation involved airborne troops and 'key leaders' of group were eliminated, Baghdad says
Arrest warrant issued for main accused in Iraq's 'heist of the century'
Scandal involved alleged plundering of $2.5bn from government funds
EXCLUSIVEIran-backed armed factions in Iraq reject call to renew truce with US troops
Commander says US soldiers must leave within six months and warns of attacks against them
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