I truly hope war can be avoided. And that real war never occurs in anyone's lifetime. But if there was a serious war or natural disaster and you had to stake your wealth and welfare on fiat, precious metals or cryptocurrency. What would your choice be. And why.
I am not fully aware of the situation between Iran and Israel but one thing is certain that Israel will not go against US and attack Iran as it will be a disaster they cannot handle. If there is a serious war or a natural disaster the first thing to do is to save yourself and your family and the rest becomes secondary 
.If you are holding some of your wealth in cryptocurrency during these times, the only thing you need to remember is the password to your wallet and it is the best option during these time.