Last Sunday, South Korea, Japan and the United States conducted a joint air drill involving a US B-1B bomber, South Korean F-15K and KF-16 fighter jets, and Japanese F-2 jets, in response to the North's ICBM launch.

The South Korean Missile Strategy Command fired a Hyunmoo-2 missile from South Chungcheong Province, about 65 miles southwest of Seoul, to demonstrate the command’s ability to make “precision strikes against the enemy’s origin of provocation,” according to a news release Friday from the Joint Chiefs of Staff.

North Korea has dubbed its recently tested new intercontinental ballistic missile “the world’s strongest,” a claim viewed by outside experts as propaganda. A missile launched by North Korea on Thursday flew higher and stayed in the air for a longer duration than any other weapon the country has fired.