US-Iran tensions LIVE Updates: The third round of nuclear talks between US and Iran are underway. The latest development comes amid increasing American military build-up in the Middle East and Donald Trump's repeated declarations that he will not allow Iran to develop nuclear weapons. Trump's comments were backed by Vice President J D Vance, who, in an interview with Fox News on Wednesday said, "Iran can't have a nuclear weapon. Biggest US military build-up since 2003Thursdays talks between Washington and Tehran come amid a massive US military build-up in the Middle East, its biggest military deployments in the region since the invasion of Iraq in 2003. Follow LIVE updates from the situation in Middle East.