Qais al-Khazali, a hardline commander, says Iraqi militias' response will be no less severe than Iranian barrage; another group warns American soldiers 'revenge is coming'

As the Iran-backed Hashed al-Shaabi force exerts its will on Baghdad government and controls events on the ground, country risks further isolation from US and the rest of the world

After one of its commanders reportedly killed in fire, head of Asaib Ahl Al-Haq paramilitary says 'his blood is on America and Israel's hands'