The 15 members of the UN Security Council are expected to begin closed-door talks on North Korea in the coming minutes.
The scheduled meeting in New York is to discuss a draft resolution that would sanction the country for its third nuclear test last month.
UN diplomats have told Reuters new agency they expect to vote on the draft resolution by the end of this week, although it could face opposition from China.
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Cloud cover will keep temperatures overnight a little warmer than usual for this time of year. Expect some mist and fog by morning.