South Korea's president has urged China to help punish Pyongyang for testing the H-bomb

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North Korean leader Kim Jong-un sparked international fury last week by completing the nuclear test, in addition to issuing a chilling statement claiming "they were are the brink of war".

South Korea's president Park Geun-hye has now urged China, who is North Korea's only major ally, to help punish the rouge nation for its continued power demonstration.

The request comes after Seoul claimed North Korea had dropped leaflets across the border describing their government as "mad dogs".

South Korea, the United States and others are pushing hard to impose fresh sanctions and other punitive measures on the North Korean dictator.