The powerful sister of North Korean leader Kim Jong Un has threatened South Korea with military action as she bashed Seoul over declining bilateral relations and its inability to stop activists from floating anti-Pyongyang leaflets across the border.

South Korea says North Korea has fired an unidentified projectile.

The United States and South Korea are postponing a joint military air exercise that North Korea has criticized as provocative.

South Korea says it has deported 2 North Koreans after finding they had killed 16 fellow fishermen onboard and fled to South Korea.

A South Korean presidential official says Seoul will consider ending a military intelligence-sharing pact with Tokyo as part of countermeasures against Japan's decision to downgrade the trade status of its neighbor.

South Korean warships conducted live-fire exercises at sea in a second straight day of military swagger from a nation still rattled by the North's biggest-ever nuclear test. 

(AP) - South Korea says North Korea has fired a ballistic missile into the waters off its east coast.  

A court has begun a session that will decide the fate of impeached South Korean President Park Geun-hye.     

The South Korean military says North Korea has test-fired a missile from a submarine off its east coast.

North Korea announced Friday the arrest of a U.S. university student for what it called a "hostile act" orchestrated by the American government to undermine the authoritarian nation.