The content originally appeared on: CNN Seoul, South Korea (CNN)North Korea has fired what is believed to be its first intercontinental ballistic missile (ICBM) in more than four years as Western leaders gather in Brussels for a security summit. The suspected ICBM flew to an altitude of 6,000 kilometers (3,728 miles) and to a distance of 1,080 kilometers (671 miles) with a flight time of 71 minutes before splashing down in waters off Japan's western coast on Thursday, according to […]