 From ABC News, I'm Michelle Franzen. On the final day of the NATO summit in Washington, D.C., President Biden and Ukraine's President Zelensky holding talks, saying the U.S. supports Ukraine against Russia's attacks until the end. Later, the president will shift to hold his first solo press conference in months, fielding questions about his fitness to run another term. ABC's Stephen Portnoy says the Biden campaign is also marking a shift in strategy