Ukrainian President Volodymyr Zelensky is in Berlin for urgent talks with European allies ahead of U.S. President Donald Trump’s high-stakes summit with Russian President Vladimir Putin in Alaska. European leaders fear a potential deal could undermine Ukraine’s sovereignty and force territorial concessions.

Ukraine reaffirms its readiness to work with maximum effort to achieve peace,” Zelensky said in a social media post after a call with Trump on Saturday. Trump confirmed the Ukrainian president’s visit to Washington in a Truth Social post,