President Joseph R. Biden, Jr., spoke today with President Volodymyr Zelenskyy of Ukraine to underscore ongoing U.S. support for Ukraine’s defense as Russia continues its assaults on Ukraine’s critical infrastructure. President Biden highlighted how the U.S. is prioritizing efforts to strengthen Ukraine’s air defense through our security assistance, including the December 9 announcement of $275 million in additional ammunition and equipment that included systems to counter the Russian use of unmanned aerial vehicles. President Biden also highlighted the November 29 announcement of $53 million to support energy infrastructure to strengthen the stability of Ukraine’s energy grid in the wake of Russia’s targeted attacks. President Biden welcomed President Zelenskyy’s stated openness to a just peace based on fundamental principles enshrined in the United Nations Charter. He reaffirmed the U.S. commitment to continue providing Ukraine with security, economic, and humanitarian assistance, holding Russia accountable for its war crimes and atrocities, and imposing costs on Russia for its aggression.