Trump has responded to the 'inflammatory' comments by saying he has moved two nuclear submarines, but did not say where to, in line with usual US military protocol. The president responded on Truth Social, as he hit out at Medvedev for his remarks, amid growing fears that war is looming.

US President Donald Trump says he has ordered two nuclear submarines to "be positioned in the appropriate regions" in response to "highly provocative" comments by former Russian President Dmitry Medvedev.