Greg Myre

Mayor Vitali Klitschko was known as Dr. Ironfist when he dominated the boxing ranks. Now he leads Ukraine's capital city with an equally fierce determination in the battle against Russia.

The U.S. and NATO are supplying Ukraine with increasingly powerful and sophisticated weapons. Will the West sustain this level of military support as the war grinds on?

China's ambassador to Washington says the U.S. is provoking China on the Taiwan question with congressional visits. The U.S. military says it's worried about Chinese military exercises around Taiwan.

Until 1974, presidents could take documents with them when they left office. Now every presidential document, from notebook doodles to top-secret security plans, belongs to the National Archives.

Congress changed the law in the 1970s when President Nixon prepared to leave with his documents — and infamous tape recordings.

For the first two centuries of U.S. history, presidents pretty much decided what documents they wanted to take with them when they left the White House. But that changed with President Richard Nixon.

The U.S. and Russia are trying to work out a prisoner exchange that involves basketball star Brittney Griner. While they've done deals for decades, the trading usually involves spies for spies.

The U.S. targeted the top al-Qaida leader, showing it could track down and strike against a hard-to-find extremist figure even in a country where the U.S. has no military or diplomatic presence.

A drone strike that killed al-Qaida's top leader marks the first major U.S. operation in Afghanistan in a year, and comes at a time when national security interests seemed to be focused elsewhere.

U.S. officials have announced that a drone strike over the weekend killed Ayman al-Zawahiri, a top Al Qaeda leader and key plotter for the 9/11 attacks.

Bout is a Russian who was the world's most notorious arms dealer in the 1990s and early 2000s. He's serving a 25-year prison sentence in Illinois, but could be freed as part of a U.S.-Russia swap.

The U.S. is trying to win the release of two Americans held in Russia. It appears it would involve a trade for a Russian imprisoned in the U.S., Viktor Bout, the world's most notorious arms smuggler.

As the CIA's marks its 75th anniversary, Russia's war in Ukraine is giving the spy agency a new direction after dark periods during the U.S. conflicts in Iraq and Afghanistan.

Nearly five months into Russia's war in Ukraine, it increasingly looks like a war of attrition. At the Pentagon, the top leaders spoke about how the U.S. is adapting to this reality.

Russia had a more powerful army. It didn't think the West would intervene. The invasion was poorly planned. We're not talking about Russia's current war, but about Russia's Crimean War in the 1850s.

A Russian missile slammed into the top floor of an apartment building in the capital, killing at least one person and injuring several others.

European leaders officially made Ukraine a candidate to join the EU. Yet, Ukraine is desperately trying to hold two cities under Russian assault.

Russia appears on the cusp of capturing Severodonetsk — a key Ukrainian city in the eastern part of the country. It's a city that's been at the center of the fighting for weeks.

The U.S. Embassy in Ukraine has been through a lot in recent years. It's just reopened and Ambassador Bridget Brink is overseeing a massive U.S. assistance operation with a limited staff.

Four European leaders are meeting Ukraine's President Volodymyr Zelenskyy in talks intended as a show of European unity. Also, the U.S. ambassador tells NPR she expects "a long, grinding, tough war."