North Korea: 'Survival of N. Korea regime depends on nuclear weapons'

The UN Security Council has issued a stern rebuke to North Korea over its third nuclear test - as it held an emergency meeting in response to the test, which was in defiance of international regulations. The organisation says it plans to beef-up the sanctions already in place for the country's previous atomic exercises.

China was among those who criticised North Korea's nuclear test. However, war correspondent and columnist Eric Margolis thinks the relations between the two allies are unlikely to sour.