Factbox-North Korea may be testing its 'monster' new ICBM

FILE PHOTO: A man walks past a TV broadcasting a news report on North Korea's the Hwasong-14 missile, a new intercontinental ballistic missile, which they said was successfully tested, at a railway station in Seoul, South Korea, July 4, 2017. REUTERS/Kim Hong-Ji

North Korea has begun testing its largest intercontinental ballistic missile (ICBM) system yet, U.S. and South Korean officials say, and may soon conduct a full ICBM launch for the first time since 2017.

Officials in Seoul and Washington say launches on Feb. 27 and March 5 involved the Hwasong-17 ICBM system, though they did not test its full capability or range.