During Donald Trump’s state visit to Japan he told Emperor Naruhito that he would support Prime Minister Shinzo Abe’s efforts to act as a mediator between the US and Iran. Abe will visit Tehran next month for talks with the President, Hassan Rouhani. Trump also gave his backing to Abe’s attempts to set up a first summit, without preconditions, with the North Korean leader Kim Jong-un, hours after the regime described his national security adviser, John Bolton, as a ‘warmonger’. Currently Tehran has no interest in talking to the US administration and last week sent 1,500 troops to the region. Trump wants Iran to have no nuclear weapons. Trump’s conciliatory tone extended to North Korea, despite deadlocked denuclearisation talks and Pyongyang’s recent testing of short-range missiles. He said his relationship with Kim was one of ‘great respect’, and talked up the prospects for progress on dismantling North Korea’s nuclear weapons programme.