North Korea calls UN sanctions 'an act of war'

The regime said the countries who voted for the sanctions will 'pay a heavy price for what they have done'

North Korea says new UN sanctions that will restrict vital oil supplies are tantamount to a complete economic blockade.

It is the first official reaction from Pyongyang, a day after the UN Security Council unanimously passed new sanctions in response to North Korea's recent intercontinental ballistic missile test (ICBM).