Mattis warns North Korea after test
Media playback is unsupported on your device
Video

James Mattis: 'Massive military response' warning to N Korea

US Defence Secretary James Mattis has said any threat to the United States or its allies by North Korea will be met with a "massive military response".

His comments came after he attended a national security meeting with President Donald Trump.

  • 03 Sep 2017
Go to next video: N Korea: How worried should we be?