The United States National Security Advisor to President Joe Biden Jacob Sullivan, Chairman of the U.S. Joint Chiefs of Staff Mark Millie, Commander-in-Chief of the Armed Forces of Ukraine Valery Zaluzhny and Head of the Presidential Administration of Ukraine Andriy Yermak on Thursday discussed by phone the latest $700-million military assistance from the U.S. to the Ukrainian army, including High Mobility Artillery Rocket Systems, Andriy Yermak revealed via Telegram.