I hear you. I suffer from crippling anxiety, even taking double the dose of sleeping pills, doesn't quite my mind enough to sleep.
I've also worried about nuclear war since I was young. The Cold War, films Luke Threads, The Day After Tomorrow and When the Wind Blows didn't help.
I used to sleepwalk, screaming as I heard the siren in my sleep and my parents would come in and wake me up.
I actually heard the siren for real once, so I knew how I'd react (it was set off by accident, I broke my ankle, but adrenaline kept me moving, watching cars stop and people come outside).
Putin threatens us every other week and has done, since the Ukraine War started.
Tru,mp is a different matter. He doesn't seem to be able to act logically or with any thought.
I admit I'm scared, the thought of conscription terrifies me, and I wish I could hide my children, as I don't think this country's worth dying g for now, so different from when my grandparents had to.
There is nothing we can do though. I hope that there is a balance and checks procedure in the Senate, which curtails Trump's irrationality.
The world has been as scary before though, I wasn't born when the Cuba Missile Crisis happened and that was scarier.