NPR talks with military analyst Michael Kofman, a senior fellow at the Carnegie Endowment for International Peace, about Russia's gains in Ukraine and what they reveal about the war's direction.

Ukraine scrambled to defend itself from Russia's largest barrage of missiles and airstrikes on Kyiv overnight. Trump says no progress was made to end the war during a call with Russia's Putin.

Russia has routinely used this line in apparent attempts to delay a truce, stating that it is not possible before certain conditions are met. Ukraine describes Russia’s demands as maximalist.

Russia launched the largest aerial assault on Ukraine overnight Sunday since the beginning of the full-scale invasion, according to the Ukrainian Air Force.

President Trump is set to hold a news conference at the conclusion of the NATO summit in the Netherlands, as the world watches to see whether a ceasefire between Israel and Iran will hold.

MICHEL MARTIN, HOST: The NATO summit wraps up today with most members promising to dramatically increase their defense spending. President Trump attended. He gave a long and wide-ranging press ...

NPR's Michel Martin asks the Atlantic Council's Jonathan Panikoff whether a ceasefire agreement will stick between two countries that have spent decades antagonizing each other, Israel and Iran.

Panikoff told NPR's Michel Martin what he sees as Iran's diminished deterrence, the uncertain future of nuclear diplomacy, shifting regional dynamics and the potential for deeper ties between Russia ...

NPR's Michel Martin asks the Atlantic Council's Jonathan Panikoff whether a ceasefire agreement will stick between two countries that have spent decades antagonizing each other, Israel and Iran.

MARTIN: And I understand that Ukraine's president, Zelenskyy, will be there today. What's he expected to say? BEARDSLEY: Well, Michel, at the Lithuania summit, Zelenskyy was treated like a rock star.

NPR's Michel Martin asks the Atlantic Council's Jonathan Panikoff whether a ceasefire agreement will stick between two countries that have spent decades antagonizing each other, Israel and Iran.