Iran has denied Donald Trump's claim that new talks on ending the conflict would begin on Monday, after the US president called off what he said would have been "massive" strikes on the country.Speaking on board Air Force One on Sunday, he said Iran "knew the extent of the attack because they saw it forming", adding: "We're talking to them in the form of a negotiation. It begins tomorrow afternoon."In an earlier post on Truth Social, Trump said he had been asked by Iran and US allies in the Middle East to "hold off" as the "perimeters" of a deal...