As Nigeria battles multiple security crises, a single attack in the west left more than 160 people dead and raises new questions about who's really in control.

President Trump's focus overseas may spare China for now, but Beijing still worries that his "America First" rhetoric hasn't softened what it calls U.S. "military adventurism."

Until now, estimating how old a dinosaur was when it died has been a fairly simple process: Count up the growth rings in the fossilized bones. But new research into some of dinosaurs' living relatives, like crocodiles, suggests that this method may not always work.

Cutting back on ready-to-eat meals won't be easy, and whole milk may make a comeback. One thing that's certain: It'll be a while before the new guidelines trickle down to schools.

A new NPR/PBS News/Marist poll finds a jump in disapproval of the agency among Democrats and independents, but Republicans are standing by ICE and the president.

Hundreds of federal agents are leaving from Minnesota, poll finds a jump in disapproval of ICE among Democrats and Independents, the last major arms control treaty between Russia and the U.S. expires.

The Olympics are a symbol of international cooperation and peace. The U.S. was once seen as a bastion of that order, but historians say Trump's America enters this year's Winter Games with a very different image.

A month after Maduro's ousting, Venezuela's Interim leader walks a tightrope between US demands and Chavista hardliners' expectations.

Are the world's superpowers back in an arms race now that the new START treaty has expired? NPR's Leila Fadel speaks with arms control expert Rose Gottemoeller.

The last major arms control treaty between Russia and the U.S. will expire on Thursday.