The high implied probability against a trilateral meeting of U.S. President Donald Trump, Russian President Vladimir Putin, and Ukrainian President Volodymyr Zelensky before 2027 stems primarily from the persistent deadlock over territorial concessions and the recent pause in U.S.-mediated negotiations. Multiple rounds of envoy-level trilateral talks occurred in Abu Dhabi and Geneva earlier in 2026, yet these produced no breakthrough on core issues, and formal three-way discussions among the leaders remain off the table. Putin has signaled openness to a bilateral encounter with Zelensky only after preliminary conditions are met in a third country, while Trump has pursued separate bilateral summits, including his August 2025 meeting with Putin in Alaska. Ongoing diplomatic contacts continue through envoys, but no timeline exists for a full leader-level gathering, and structural barriers such as unresolved land disputes continue to limit prospects for rapid progress.