The United States and China are making progress on a new UN resolution that would impose additional sanctions against North Korea following its test of an intercontinental ballistic missile, US Ambassador Nikki Haley said on Tuesday. The US gave China a proposed resolution several weeks ago, and Haley told reporters that China has been negotiating with its close ally Russia on possible new sanctions, the South China Morning Post reports. “The true test will be what they’ve worked out with Russia,” she said. Haley stressed that the United States wants to ensure it’s “a strong resolution, because that’s what we think we need to have.” Haley refused to say what measures were being discussed. But earlier this month she told the Security Council that if it is united, the international community can cut off major sources of hard currency to North Korea, restrict oil to its military and weapons programs, increase air and maritime restrictions and hold senior officials accountable.