Nuclear war won't happen.

There are forces, including aliens, that will stop any actual nuclear launch.
That said, the fear is real, and most of the fear comes from the TV.

Putin is going after NATO. They could have mopped up U-crane at any time.
NATO is a very corrupt organization. And, uhhh, basically, it breaks down into a whole bunch of nations fighting with their neighbors and themselves, clearing up a lot of built up hostility.

A lot more is going on than what we are told. I don't think we have even seen the real actors in this yet.