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Russia is preparing an update to its doctrine on the use of nuclear weapons. NPR's A Martinez asks Cold War historian Sergey Radchenko what it could mean for the West.

White House economist Stephen Miran was quizzed by senators about whether he could make decisions independently of President Trump, if he's confirmed to a seat on the Federal Reserve's governing board.

Shalanda Young was a top House aide for years, navigating government funding fights between Congress and the White House. Now, she's one of President Biden's negotiators on the debt limit drama.

Former Venezuelan President Nicolás Maduro is expected to argue that his leadership role shields him from prosecution in the U.S.

As Iran's protests enter a third week, the country's president blames foreign powers for the unrest, and warns it will retaliate if the US intervenes militarily.

Parkinson's disease appears to disrupt a brain network involved in everything from movement to memory.

Parkinson's disease can affect sleep, thinking and smell, as well as movement. A new study may explain why.

Clinical psychologist Talal Alsaleem has helped hundreds of couples work through romantic affairs. He shares common misconceptions about cheating -- and how to cope.

As clerics convene to replace Iran's supreme leader Ayatollah Ali Khamenei after his death in an Israeli strike, Iran faces a pivotal choice that could either cement hardline continuity under his son or usher in a fundamentally transformed regime.

Iran's internet and phone calls are still blocked, and trying to reach the outside world comes with real risk.