The discussions I've read and the book (I haven't been able to find good link) say it's highly highly sensitive since post-WWII agreements were Japan gets no nuke bombs capability. But because of China, either the US agrees to provide military nuclear cover, or else let Japan have some nukes. We're way past a time where Japan would nuke Pearl Harbor, so maybe that all got covertly relaxed since a nuclear Japan is a barrier against China. Plus. Toyota good, round eyes rike Honda too. You turn brind eye consumer-san, it okay.