 And obviously this is being taken very seriously and it comes as Japan is trying to strengthen its defence forces against China. Sure, that will be the most serious worry about these investigations, not the very trivial cases, but the ones about lapse of security. Japan over the last couple of years has increased defence spending. It's tried to bolster its military in the face of a number of threats. China, of course, also North Korea, also Russia in that part of the world as well.