North Korea has informed neighbouring Japan that it intends to launch a satellite in the coming days, which might be Pyongyang’s first military reconnaissance satellite. The coast guard of Japan stated that the launch window was between 31 May and 11 June and that the launch might affect waterways in the Yellow Sea, East China Sea, and east of the Philippines’ Luzon Island. The Japanese coast guard issued a warning to ships sailing through the region during the launch window. Japan’s coast guard organises and transmits marine safety information throughout East Asia, presumably why it received North Korea’s alert. Japan’s…