I don't think that anyone seriously fears that the world can be blown to pieces all together. But what one can fear and rightly so are regional things, like in the Middle East, India, Pakistan, the Korean Peninsula, borders in Africa, etc. ↗
The best thing to do is stare it in the face and move on. We have to face our fears and plow through. I think taking chances takes a lot more courage than staying stagnant and doing what's safe and comfortable. ↗
My psycho-analytic work has convinced me that when in the baby's mind the conflicts between love and hate arise, and the fears of losing the loved one become active, a very important step is made in development. ↗