What high-level diplomatic meetings are taking place regarding Ukraine and Russia?

Two significant diplomatic engagements are occurring simultaneously: European leaders are meeting in Paris to discuss security challenges for Ukraine, with divisions apparent as France and the UK push for stronger security guarantees while Germany opposes peacekeeping troops deployment. Meanwhile, US Secretary of State Marco Rubio, National Security Adviser Mike Waltz, and Special Envoy Steve Witkoff are scheduled to meet with a Russian delegation including Foreign Minister Sergei Lavrov in Riyadh. This meeting is preparation for a future summit between Trump and Putin in the Saudi capital, raising implications for Europe's role in future Ukraine peace negotiations.