From left to right, CEO of the National Joint Stock Company Naftogaz of Ukraine Sergii Koretsky, Ukraine’s President Volodymyr Zelenskyy, U.S. Ambassador to Greece Kimberly Guilfoyle, Greece’s Prime Minister Kyriakos Mitsotakis, Chief Executive Officer at DEPA S.A.Konstantinos Xifaras and Greek Minister for Environment and Energy Stavros Papastavrou, pose after a signing of an agreement at Maximos Mansion in Athens, Greece, Sunday, Nov. 16, 2025.