U.S. Special Envoy Steve Witkoff said on Sunday that Russia agreed to allow “Article 5 security guarantees” for Ukraine during Friday’s meeting between Russian President Vladimir Putin and President Donald Trump in Alaska.

Under NATO’s founding treaty, Article 5 protection means that any attack against one member country is considered an attack against all 32 members. While Ukraine is not part of NATO, its NATO-like security guarantee would be designed to deter future Russian aggression if the war ends via a peace deal brokered by the Trump administration.