Russian Foreign Minister Sergey Lavrov rejected proposals Monday floated by President-elect Trump’s allies to end the war in Ukraine, dealing a major setback for the incoming president’s hopes to freeze the conflict. In an interview with Russian state-run media outlet TASS, Lavrov said Moscow has “not received any official signals regarding a settlement in Ukraine” but the Kremlin was resistant to those unofficial ideas. “We are not happy, of course, with the proposals made by members of the Trump team to postpone Ukraine’s admission to NATO for 20 years and to station British and European peacekeeping forces in Ukraine,” he...