Trump warns Kim Jong Un had 'everything' to lose through hostility towards US
This comes as Pyongyang said it had carried out a major new weapons test.
This comes as Pyongyang said it had carried out a major new weapons test.
The 265-metre-long tunnel can be used to test hypersonic aircraft that can travel 25 times the speed of sound.
The country has sought to justify its weapons programme as a defence against US nuclear “blackmail”.