The Guardian | Justin McCurry: Donald Trump has said he would support Shinzo Abe�s efforts to act as a mediator between the US and Iran, as reports suggested the Japanese prime minister would visit Tehran next month for talks with the Iranian president, Hassan Rouhani.

Speaking at a press conference on the penultimate day of his state visit to Japan, 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 the US president�s national security adviser, John Bolton, as a warmonger.

Tehran says it has no interest in talking to the US administration, which has imposed tough sanctions on the country over its nuclear programme and last week sent 1,500 troops to the region.

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