French President Emmanuel Macron will travel to Warsaw, Poland, on Dec. 12 to discuss with Polish Prime Minister Donald Tusk the hypothetical deployment of a post-war peacekeeping force to Ukraine that would preserve Ukrainian sovereignty in the event of a deal between incoming U.S. President Donald Trump and Russian President Vladimir Putin to end the Russia-Ukraine war, Politico reported on Dec. 11. Sources claimed the peacekeeping force could include as many as 40,000 troops, presumably predominately from NATO countries.