Doubts raised about North Korea's 'H-bomb of justice' claims

North Korea has trumpeted its first hydrogen bomb test as a "H-bomb of justice", but the announcement today has been met with widespread scepticism.

The test was met with a burst of jubilation and pride in Pyongyang, with a North Korean television anchor saying the test of a "miniaturised" hydrogen bomb had been a "perfect success" that elevated the country's "nuclear might to the next level".