 That's NPR's Barbara Sprunt, who says the topic will remain top of mind for many Democrats when they return to Capitol Hill on Monday. Biden, meanwhile, continues to say he'll stay in the race. NATO is gearing up to mark its 75th birthday with a summit in Washington this week. But as Terry Schultz reports from Brussels, the atmosphere is filled more with concern than celebration. More than two years into a war at NATO's borders, Secretary General Jens Stoltenberg says solidifying support for Ukraine is the Washington summit's most urgent task.