North Korea
South Korean warships in live-fire exercises.
'The Korean Peninsula seems to be at a critically dangerous point.'
An heir to his brutal regime.
The five things you need to know about politics today.
'Possibly an intercontinental ballistic missile.'
US Secretary of Defense James Mattis warns North Korea of 'massive military response'.
World War III would be 'devastating'.
'Talking is not the answer!'
Tell-tale traits not present this time around, experts say.
About North Korea
North Korea is led by Kim Jung-un. In December it launched a long range rocket, defying warnings from the UN and Washington. In April, North Korea defied international warnings by launching a similar rocket, however the craft disintegrated seconds after launch, causing considerable embarrassment to the regime.