BAGHDAD (Reuters) -Several powerful Iranian-backed militia groups in Iraq are prepared to disarm for the first time to avert the threat of an escalating conflict with the U.S. Trump administration, 10 senior commanders and Iraqi officials told Reuters. The move to defuse tensions follows repeated warnings issued privately by U.S. officials to the Iraqi government since Trump took power in January, according to the sources who include six local commanders of four major militias. The officials told Baghdad that unless it acted to disband the militias operating on its soil, America could target the groups with airstrikes, the people added.