The U.S. is discussing enhanced security guarantees for Ukraine with European allies, including the UK, Germany, and France, following new challenges in peace negotiations. U.S. envoy Steve Witkoff stated the call focused on strengthening deterrents against future Russian aggression and advancing a prosperity package for Ukraine's resilience post-war. A meeting with security officials is planned for January 3rd, continuing diplomatic efforts to end the conflict, a key pledge of President Trump.