Calls to invoke the 25th Amendment after Trump's Iran threats 'useless'

US President Donald Trump’s threat to destroy “a whole civilisation” in Iran has reignited calls to invoke the 25th Amendment and drawn condemnation across the political spectrum. Yet despite a growing chorus of critics, from Democrats to former MAGA allies, the mechanism remains politically out of reach – even as Trump’s approval ratings slide ahead of the 2026 midterms.