What we know about North Korea's new ICBM
CNN
North Korea has confirmed it tested a new type of intercontinental ballistic missile (ICBM), its first long-range test in more than four years and marking a potential new era of regional confrontation.
North Korean state media said on Friday that leader Kim Jong Un had directly guided the launch of the weapon, known as the Hwasong-17, its most advanced to date. The report described the launch as a "powerful nuclear war deterrent" and quoted Kim as saying the country's forces were "fully ready" for potential military confrontation with the United States.
The huge weapon could, at least theoretically, put the entire US mainland in range of a North Korean nuclear warhead, but there's a lot of unknowns about the missile's capability to deliver a nuclear payload on target.