David Lammy with United States Secretary of State Marco Rubio.David Lammy has refused to say whether the government backs Donald Trump’s decision to bomb Iran.The foreign secretary also failed to say whether he believed the US president’s actions were even legal.His comments came as Iran warned it was preparing a “decisive response” to the American strikes on its nuclear facilities.Meanwhile, Keir Starmer held talks with Trump on Sunday night in which the pair discussed the need for Iran “to return to the negotiating table as soon as possible and to make progress on a lasting settlement” in the Middle East.On Radio Four’s Today programme this morning, Lammy said Iran must not be allowed to develop nuclear weapons.Presenter Justin Webb a