They’re at it again. U.S. Strategic Command said the nuclear-armed pariah fired two presumed Rodong intermediate-range ballistic missiles Wednesday morning. One exploded immediately after launch, but the second test was one of North Korea’s longest — flying about 621 miles before splashing down 125 miles from Japan’s northeast coast, the Japanese defense ministry reported. The rogue nation’s fuming over missile defense collaboration between the U.S. and South Korea. The Hermit Kingdom’s done several tests this year, and more are expected in the coming weeks ahead of annual U.S.-South Korea military drills.