U.S. and European officials have begun quietly talking to the Ukrainian government about what possible peace negotiations with Russia might entail to end the war, according to one current senior U.S. official and one former senior U.S. official familiar with the discussions.

The conversations have included very broad outlines of what Ukraine might need to give up to reach a deal, the officials said. Some of the talks, which officials described as delicate, took place last month during a meeting of representatives from more than 50 nations supporting Ukraine, including NATO members, known as the Ukraine Defense Contact Group, the officials said.

The discussions are an acknowledgment of the dynamics militarily on the ground in Ukraine and politically in the U.S. and Europe, officials said.