NPR News

Facebook is going to "turn things around," CEO Mark Zuckerberg said Thursday, by turning "your Android phone into a great, simple social device" that is "designed around people."

He came on stage just after 1 p.m. ET at Facebook's Menlo Park, Calif., headquarters to talk about a very poorly kept secret — the so-called Facebook phone.

But, Zuckerberg said at the start of his talk, "we're not building a phone and we're not building an operating system."

Almost every day, there's some new threat out of North Korea.

It's hard to determine how seriously to take these threats. War on the Korean Peninsula could be catastrophic, so the bluster can't be dismissed. On the other hand, North Korea has a long history of hyperbole, of making threats it doesn't follow through on.

The United States has sent two F-22 Raptor fighter jets to take part military drills in South Korea, a move that is meant to show U.S. commitment to the defense of the region from its North Korean neighbor, a Pentagon spokesman told the Associated Press.

Also on Monday, South Korean President Park Geun-hye appeared to give her country's military permission to strike back at any attack from the North.