Interview with General HR McMaster

President Trump's National Security Adviser General HR McMaster says the US stands ready to compel the denuclearisation of North Korea's 'rogue' regime, with or without their co-operation if necessary. North Korea, he believes, is a "grave threat" to the world, and the US and the international community are running out of time to stop them. Speaking in a wide-ranging interview to the BBC's Yalda Hakim in Washington, General McMaster spoke in depth on a number of topics including Russian interference in the US elections and the president’s Twitter habit.