War with Japan was only inevitable because FDR made it so. Neither the Nazis, Japanese nor Soviets were in any position to invade the US (nor had any desire to).
Furthermore, the 'arms race' can largely be laid squarely on the US Government's 'Cold War' policy of militarizing the economy to fight a militarized economy (a cockamamie scheme if I've ever heard one). Apparently the fact that the Soviets themselves were aware of the frequent paralyzation of major sections of their military forces due to the lack of rational allocation that socialism makes inevitable, noteably that large swathes of their weapons wouldn't have work.
Further, it makes one wonder why the US would spend tons of money on offensive weaponry and use it in such a way as to provoke the person with whom war is allegedly most undesireable and at the same time totally fail to protect or even allow personal protection by citizens it is supposedly 'protecting'. All with stolen money, no less.
'National security' is a myth, the military is nothing but the 'business' end of the government and, like all government institutions, dangerous to liberty both at home and abroad and quite frankly I am so far beyond taking your assertions seriously that no debate between us would be productive.