Syria's UN ambassador, Bashar Ja'afari, slammed the United States at the special Security Council meeting.
But he first suggested that its strike against Syrian soldiers last weekend was first an act of aggression and then an act of incompetence because it couldn't tell the difference between Isis and troops fighting Isis.
The US has admitted the strike but said it was a "terrible mistake".
Prime Minister John Key handed over that part of the proceedings to New Zealand ambassador Gerard van Bohemen to chair.
Ja'afari said the Government was shocked at the "brutal aggression launched by American, British, Australian and Danish fighter jets" last weekend.