What proof is there that terrorists are trying to secure nuclear weapons? How would they smuggle it unnoticed across the world? Why would they want to target th

What proof is there that terrorists are trying to secure nuclear weapons? How would they smuggle it unnoticed across the world? Why would they want to target the city you live in? These questions must be weighted by each person for him or herself. I've chosen for some nicer car insurance. I still don't have nuclear terrorism insurance. I still sleep well at night after working in defense in this area and having friends working on these very issues.