U.S. Ambassador to Moscow John Sullivan delivered U.S. and NATO responses to Russian demands on Wednesday. A NATO official refused to comment on the substance of NATO’s response, but the alliance’s document is unlikely to offer major concessions. And while the Biden administration has requested that Russia not publish the U.S. response, Foreign Minister Sergey Lavrov hinted that it would be leaked.

Still, Secretary of State Antony Blinken did confirm that NATO’s open-door policy would remain in place. That matters because a key Russian demand was NATO’s commitment not to further expand NATO’s membership. Russia has also demanded an end to NATO military deployments in member states such as the Baltics, Bulgaria, and Romania and a unilateral restriction on U.S. missile deployments.