(AP) Two U.S. officials say it was “highly likely” that an Iranian anti-aircraft missile downed a Ukrainian jetliner late Tuesday, killing all 176 people on board. President Donald Trump is suggesting he believes Iran was responsible. He is dismissing Iranian claims that it was a mechanical issue that brought down the plane. The officials, citing U.S. intelligence, spoke on the condition of anonymity to discuss sensitive information. The crash came just a few hours after Iran launched a ballistic missile attack against Iraqi military bases housing U.S. troops amid a confrontation with Washington over a U.S. drone strike that killed an Iranian Revolutionary Guard general.