It has a potential range of 9,320 miles.South Korea's military spoke of preparing for further launches from North Korea and told ABC News, "Our military has strengthened surveillance and vigilance in preparation for additional launches and is maintaining a full readiness posture while closely sharing information related to North Korea's ballistic missiles with the U.

Defense Minister Gen Nakatani said at least seven North Korean missiles flew as far as 400 kilometers (250 miles) with a maximum altitude of 100 kilometers (60 miles).

The launch, into waters west of Japan, came shortly after the United States and South Korea criticized the North for sending troops to join Russia’s war.