Russia recently introduced a new warship in the Black Sea, an area of heightened tension since Russia's seizure of Crimea two years ago. NPR's Corey Flintoff was invited on board.
Some 30,000 troops from 20-plus nations took part in Europe's biggest military exercise since the Soviet Union collapsed. It was meant to send a message to Russia, but critics warn it could backfire.
In Poland and Romania, some are happy to have new U.S. bases in light of recent Russian moves. But others say the most likely result will be heightened tensions with Moscow.
The NATO maritime force will contribute "critical information and surveillance to help counter human trafficking and criminal networks," says NATO Secretary-General Jens Stoltenberg.
Russian officials responded by announcing plans to halt joint projects with the small Balkan nation. The last countries to join NATO were Balkan states Albania and Croatia, in 2009.
A hospital was hit while U.S. forces were conducting an airstrike in the Afghan city; the aid group says 22 people were killed. NATO has said it will conduct an investigation into the attack.
The U.S. and NATO have spent years in Kunduz, Afghanistan, building communities to keep insurgents out. Two who were there 12 years ago describe how it felt this week when the Taliban retook the city.
The missile defense system deployed to Turkey in 2013 will be withdrawn so the batteries can be updated and modernized, according to a joint U.S.-Turkey statement.