NATO

The anticipated approval by the 30 NATO allies for Sweden and Finland on Tuesday will send the membership bids of the two nations to the alliance capitals for legislative approvals.

Estonia is host to one of the world's largest annual interactive cybersecurity drills. Russia is always considered the main threat, but this year, the war in Ukraine has only added to the stakes.

Western allies would respond if Russia uses chemical weapons against Ukraine, President Biden said after an emergency meeting with NATO allies. "It would trigger a response in-kind," he said.

The Marines died from the crash of a V-22B Osprey aircraft during a NATO exercise unrelated to the Ukraine war, officials said.

Article 5 of the North Atlantic Treaty means that an attack on one member state is determined to be an attack on all. Ukraine is not part of the alliance — but some of its neighbors are.

Here is how the history of NATO, Russia and Ukraine got so complicated.

Russia's delegation remained open to the prospect of future discussions after having its main positions rebuffed by NATO and the U.S.

"For us, it's absolutely mandatory to make sure that Ukraine never, never, ever becomes a member of NATO," Russian Deputy Foreign Minister Sergei Ryabkov said.

Russian President Vladimir Putin urged the West on Thursday to move quickly to meet Russia's demand for security guarantees precluding NATO's expansion to Ukraine.

NPR's Mary Louise Kelly talks with Adm. James Stavridis, former Supreme Allied Commander of NATO, about the NATO summit and the state of the global alliance.