As top U.S. officials prepare for a meeting with a Russian delegation in Saudia Arabia Sunday, questions have mounted over how the Trump administration will push Moscow to extend a preliminary ceasefire. Russian President Vladimir Putin this week agreed to temporarily halt strikes on Ukraine's energy infrastructure, which includes Europe's largest nuclear power plant, the Zaporizhzhia Nuclear Power Station. Secretary of State Marco Rubio and National Security Advisor Mike Waltz, who will both travel to Jeddah for the negotiations, said the next step will be to secure a ceasefire over the Black Sea.