AdvertisementBiden pledges $800 million to Ukraine after Zelenskyy's plea for more U.S. aidUpdated March 16, 2022Elena MoorefacebookEmailPresident Biden signs a delegation of authority on Wednesday. From left, Secretary of State Antony Blinken, Biden, Deputy Secretary of Defense Kathleen Hicks and Chairman of the Joint Chiefs of Staff Gen. Mark Milley. (AP)This article was originally published on March 16, 2022.