US send hundreds more troops to region; US president says Tehran directly responsible for protesters storming US Embassy compound in Iraq and says they will be held accountable

Barrage of up to 30 projectiles targets northern Iraqi military compound housing American service members

US defense chief tells Iraq's outgoing PM that rocket attacks blamed on Iran-backed militias 'not good for anybody'

US secretary of state makes statement after flurry of rocket attacks on Iraqi bases housing American troops

As new rocket attack targets base near Baghdad housing US troops, military source says Tehran-backed force becoming bigger threat than Islamic State

US vice president stays out of Baghdad for security reasons, speaks to Iraqi PM by phone after he declines to visit him on military base

No immediate word on casualties in attack near Mosul, where American soldiers are helping Iraqi forces battle remnants of Islamic State

Secretary of Defense Mark Esper assures Baghdad that redeployed troops will only temporarily stay in country before returning home

Defense Secretary Mark Esper says American pullout will take several weeks and all forces will be sent to western Iraq to continue fight against Islamic State

Israel's reported actions against pro-Iranian militias in the Arab state have exposed internal US differences, underline delicate balancing act required by all sides