North Korea conducts check for missile it claims can goal US mainland

North Korea on Sunday performed a missile check for an upgraded solid-fuel engine it says can achieve the U.S. mainland, in step with state media.  The rustic reported the engine’s most thrust is two,500 kilonewtons, noting an building up from a 1,970-kilonewtons check in September, in step with the legitimate Korean Central Information Company (KCNA).  The check took…