<h1>U.S., Ukraine, Europe push trilateral talks with Russia on ceasefire, NATO-style guarantees, Donbas and Crimea concessions</h1> U.S., Ukrainian and European leaders convened to explore trilateral talks with the Russian president aimed at ending the war, discussing NATO-like security guarantees for Ukraine, potential ceasefire terms, and territorial concessions including the Donbas and Crimea. The U.S. president signaled willingness to negotiate security commitments without deploying troops; the Ukrainian president affirmed openness to trilateral talks but stressed any settlement must be durable and respect constitutional limits on territorial concessions. European partners sought concrete U.S. assurances and joint pressure on Russia. Key legal issues include sovereign territorial integrity, binding security guarantees, constitutional constraints on concessions, and conditions for a lasting peace.