The United States is not considering returning to Ukraine the nuclear weapons it gave up after the Soviet Union collapsed, White House national security adviser Jake Sullivan said on Sunday. Sullivan made his remarks when questioned about a New York Times article last month that said some unidentified Western officials had suggested U.

President Vladimir Putin said on Thursday that Russia would use all weapons at its disposal against Ukraine if Kyiv were to acquire nuclear arms. The New York Times reported last week that some unidentified Western officials had suggested U.