Updated

Britain's U.N. ambassador says the U.N. Security Council is "moving fast" by its normal standards to impose new sanctions against North Korea over its nuclear and missile tests.

The council condemned North Korea's latest ballistic missile launches on Sept. 6 and threatened "further significant measures" if it refused to stop its tests.

British Ambassador Matthew Rycroft told reporters on Tuesday: "I think we are moving fast — or at least fast by normal Security Council standards — to impose additional significant measures in light of the continued breaches of the resolutions, and that's progressing."

The United States and China, a North Korea ally, have been negotiating a new sanctions resolution with other key parties. The last U.N. sanctions resolution was adopted in March after two months of negotiations.