washington unite state seek monday avoid openly take side iraqi-kurdish dispute iraq capture kurdish-held city kirkuk raise risk open conflict u.s. ally fight islamic state u.s. president donald trump express disappointment two side fight like fact clash take side trump tell reporters white house many years good relationship kurds know also side iraq even though never first place never take side battle iraqi government force capture major kurdish-held oil city kirkuk monday respond kurdish referendum independence bold lightning strike transform balance power country convoy armor vehicles iraq elite u.s.-trained counter-terrorism force seize kirkuk provincial government headquarter monday afternoon less day operation begin reuters reporter kirkuk say senator john mccain influential chairman senate arm service committee warn iraq government severe consequences misuse u.s.-provided weaponry kurdish force pentagon spokesman colonel robert man decline speculate whether unite state might cut military aid train iraqi force event major conflict say go speculate tell look options plan considerations ... encourage dialogue u.s. 'not take side iraqi-kurdish dispute trump