President Donald Trump discussed his worry about nuclear weapons on Sunday, saying that “monster” nukes could be the biggest threat to humanity, with the potential to “end the world.”

Iran's supreme leader Ayatollah Ali Khamenei on Saturday slammed what he described as bullying tactics a day after US President Donald Trump threatened military action against Iran. On Friday, Trump said he had written to Iran's supreme leader,

US President Donald Trump has downplayed the threat of climate change – and said ‘monster nukes’ from the US and Russia pose the biggest threat to armageddon. In an interview with Fox News, Trump spoke of the dangers of nuclear stockpiles around the world and lamented the huge amount of money spent on maintaining the ‘big monsters’ that could cause the end of the world.

Leading progressive foreign policy voices are cheering Trump’s interest in a nuclear deal with Iran, while pro-Israel leaders remain wary