SEOUL (Reuters) - North Korea successfully launched a new type of intercontinental ballistic missile, the  Hwasong-15  that can reach all of the United States, the isolated country s state media said on Wednesday. The missile is the North s most powerful ever, and it flew 950 km (590 miles) for 53 minutes while reaching an altitude of 4,475 km (2,781 miles), according to a statement read by a television presenter. 