Key world powers have proposed a range of expanded U.N. sanctions against North Korea in response to its recent nuclear test as well as measures to give teeth to existing ship searches and bans against the reclusive Asian nation, a U.N. diplomat said. The five permanent veto-wielding council members, the United States, Russia, China, Britain and France, and the two countries most closely affected by the nuclear test, Japan and South Korea, discussed possible U.N. sanctions and other measures for a new Security Council resolution on Tuesday. The diplomat, who is familiar with the talks but spoke on condition of anonymity because they were closed, said there was a clear commitment to go for sanctions in the new resolution and no reluctance from North Korea's allies, China and Russia. But what measures the 15-member council ultimately agrees to remains to be seen. "I think the goal is to have eventually denuclearisation of the Korean peninsula and stability in the region," Russia's U.N. Ambassador Vitaly Churkin told reporters, "and we all certainly have the goal, I think of a political and diplomatic outcome of this situation." U.S. Ambassador Susan Rice agreed that council members want to "ensure that we have ultimately a non-nuclear North Korea and that we are not facing the threat or the reality of proliferation."