WW3 is not like WW2. People just sit and press the button. So I think crypto will still exist, the market all "go to the moon". The value of cryptocurrency may increase 500-1000%. But I don't think wallet, exchanges site will be available. It reminds me of the North Korean missile test. At that time, bitcoin prices increased dramatically because Koreans and Japanese bought a lot of bitcoins. That is the opportunity for us - true holders.