KYIV — President Biden made a shock go to to the Ukrainian capital on Monday and introduced nearly a half-billion {dollars} in extra help to Ukraine, in a show of U.S. help for the nation 4 days earlier than the anniversary of Russia’s full-scale invasion.

Later Monday, Secretary of State Antony Blinken mentioned in a press release that the $460 million in support would come with ammunition for U.S.-provided missile and tank methods, air surveillance radars and “emergency help to maintain Ukraine’s vitality infrastructure up and operating within the face of Russia’s relentless missile and drone assaults.”