 Ukrainian President Volodymyr Zelensky has met with top congressional leaders on Capitol Hill. As NPR's Barbara Sprunt reports, his visit comes as support for Ukraine tops the agenda at the NATO summit in Washington. Zelensky met with a bipartisan delegation, including Senate Majority Leader Chuck Schumer and Minority Leader Mitch McConnell, as well as House Speaker Mike Johnson. He told reporters he's invited the speaker to Kiev. Here's Johnson's reaction.