North Korea has ramped up their testing of missiles in the past few days. 

North Korea today fired two short-range ballistic missiles into the sea in the direction of Japan. This is the latest sign that the nation continues to develop its weapons program. This was North Korea's sixth missile launch in just the last 12 days. Earlier this week, North Korea fired an intermediate-range missile over Japan, prompting joint missile drills from South Korea and the US. Lutian Wang has the story.