Former Prime Minister Helen Clark has spoken out against New Zealand's response to the war in Iran. Photo / NZMEFormer Prime Minister Helen Clark has spoken out against New Zealand’s response to the war in Iran. Photo / NZME

President Donald Trump had the power to declare the war over when it suited him, Helen Clark said. Photo / Getty ImagesPresident Donald Trump had the power to declare the war over when it suited him, Helen Clark said. Photo / Getty Images

Prime Minister Christopher Luxon's handling of the response to the war had been "found wanting", Helen Clark said. Photo / Mark MitchellPrime Minister Christopher Luxon’s handling of the response to the war had been “found wanting”, Helen Clark said. Photo / Mark Mitchell