North Korea is test-firing ballistic missiles of various range capabilities flexing its military muscle and beefing up its nuclear arsenal. According to state media, the launches that have picked up pace over the past few weeks are just "drills." Also, the accelerated testing and expansion of missile competence are in protest of Seoul's military activities and joint exercises with the U.S. military.
The region has remained a flash point since the Korean Wars, dating back to the 1950s. Yesterday, in what amounts to an escalation of tension, North Korean and South Korean forces fired "warning shots," accusing the other of breaching maritime borders. The Northern Limit Line (NLL), the de facto sea boundary, is contested by Pyongyang.