North Korea test-fired 25 short-range missiles off the eastern coast of the Korean Peninsula on March 16, 2014. The missiles flew approx. 70 kilometers before splashing into the Sea of Japan. 

Pyongyang's action was apparently in response to the ongoing US-ROK "Key Resolve" and "Foal Eagle" military exercises." 

On March 6, a ballistic missile launched by North Korea narrowly missed a China Southern Airlines passenger jet flying from Tokyo to Shenyang in China.