NEW YORK – Special U.S. envoy Steve Witkoff said Sunday that Russian leader Vladimir Putin agreed at his summit with President Donald Trump to allow the U.S. and European allies to offer Ukraine a security guarantee resembling NATO’s collective defense mandate as part of an eventual deal to end the 3 1/2-year war.

“We were able to win the following concession: That the United States could offer Article 5-like protection, which is one of the real reasons why Ukraine wants to be in NATO,” he said on CNN’s “State of the Union.” Witkoff said it was the first time he had heard Putin agree to that.