This is fully double standard by US.
Diplomats with gun shooting 2 people (no matter who they are) same time another team coming to rescue.
He can speak fluently in local language. Dont have any proof of diplomats and havent traveled on VISA for diplomats.
He doesnt want to cooperate with...
Yes I can understand your point of view but you should also consider time has changed and Japan dont want to leave with nuclear armed neighbors without having capable nuclear deterrence.
I think Japan dont want another Hiroshima or Nagasaki. Preventions are better than cure.
US cannot STOP Iran from going nuclear and top of that if Japan goes nuclear then its headache of china. It will be in favors of US only.
So better leave in peace and adopt flexible attitude instead of rigid...