The below is attributable to Spokesperson Matthew Miller:

Secretary of State Antony J. Blinken spoke by phone today with Foreign Minister Dmytro Kuleba to thank him for his tireless leadership of Ukraine's foreign policy through historic challenges, particularly as the world rallied around Ukraine's defense following Russia's full-scale invasion. The Secretary expressed his gratitude for the close partnership our two countries have developed through many engagements and reiterated the United States' enduring support for the people of Ukraine as they defend themselves, their homeland, and their freedom from Russia's aggression.