The below is attributable to Spokesperson Matthew Miller:
Secretary of State Antony J. Blinken spoke with Bulgarian Foreign Minister Mariya Gabriel today, offering congratulations on her appointment. Secretary Blinken and Foreign Minister Gabriel discussed the need for continued security assistance for Ukraine from Allies and partners and ongoing efforts to diversify energy sources toward cleaner, more secure supplies and technologies. The Secretary and Foreign Minister also addressed the importance of EU enlargement to secure stability and prosperity in the region.
Source: U.S Department of State, Bureau of European and Eurasian Affairs