national security

A three-judge panel for a U.S. appeals court has thrown out a lower-court decision that sought to stop the NSA from continuing to collect metadata on phone calls made by Americans.

The lower court ruling had found that the practice was unconstitutional.

The U.S. has around 800 military bases outside of the nation's borders. They're home to hundreds of thousands of troops and family members, and, in many cases, they're a cause of controversy.

David Vine, an associate professor of anthropology at American University, argues that we've become too dependent on such overseas bases — and that many of them cause serious opposition abroad. He lays out his thinking in his new book, Base Nation: How the U.S. Military Bases Abroad Harm America and the World.

The New York Times and ProPublica report that the National Security Agency's ability to spy on Internet traffic "has relied on its extraordinary, decades long partnership" with AT&T, according to documents leaked by former NSA contractor Edward Snowden.

According to the reporting, the NSA documents do not identify AT&T by name, but by the codename "Fairview."

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During a commencement address at the U.S. Coast Guard Academy today, President Obama will cast climate change as posing an "immediate risk to our national security."

NPR's Scott Horsley reports Obama is expected to tell graduates that the Coast Guard itself will have to adjust to the effects of rising sea levels. Scott filed this report for our Newscast unit:

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