BBC: The US has tabled a UN resolution - agreed with China - for sanctions that would target North Korea's diplomats and cash transfers. Washington's UN ambassador Susan Rice said they would be "some of the toughest sanctions" the UN had imposed.

Li Baodong, China's UN envoy, said a "strong signal" had to be sent following North Korea's third and most powerful nuclear test last month. Earlier, Pyongyang warned it would scrap a 60-year Korean ceasefire.