A joint military exercise between the U.S. and South Korea has freaked out North Korean leadership.
The annual drill, named Foal Eagle, runs from Feb. 24 to April 18 and features Marines from both countries.
North Korea views the drill as a possible threat and has responded by ratcheting up its own military rhetoric.
Further, The Hermit Kingdom has announced military drills of its own, and launched hundreds of missiles toward a disputed maritime border with South Korea. The country has also promised a new kind of nuclear test in response.