Istanbul Talks Ceasefire Proposals Ukraine Peace Talks Conflict Resolution Failed Agreements Scholz's Peace Proposal War Ukraine-Russia Relations Ceasefire Zelensky Moscow-Kiev Talks U.S.-Ukraine Relations Turkey Talks Ceasefire Efforts Warfare Diplomacy Conditions for Peace Russia-Ukraine Peace Talks High-Level Meetings U.S.-Russia Relations Reconstruction Efforts Diplomatic Strategies Sovereignty of Ukraine Zelenskyy Opposition