https://www.bbc.com/news/uk-wales-60738988
The movie, By_Dawn's_Early_Light was released in May 1990. https://www.imdb.com/title/tt0099197
"In 1991, dissident officials in the Soviet Union launch a nuclear missile at Donetsk from a site in NATO member Turkey. The Soviet automated defence systems, believing that a NATO attack is in progress, execute a measured launch of intercontinental ballistic missiles (ICBMs) at the United States. After Donetsk is destroyed, the Strategic Air Command (SAC) scrambles its forces and SAC Commander General Renning urges the US president to authorize a full counterattack. The Soviet leader explains the dissidents' actions to the US president. He asks the US to stand down, but he is willing to accept a US counterstrike comparable to the Soviets' strike, costing each side six to nine million people. If the United States launches an all-out attack, the Soviets will respond in kind and doom the whole planet." https://en.wikipedia.org/wiki/By_Dawn's_Early_Light#Plot
https://en.wikipedia.org/wiki/By_Dawn's_Early_Light#Production , https://www.youtube.com/watch?v=AFLtRIwMqxY
https://www.defenseworld.net/news/31626/Three_U_S__Instructors_Killed_by_Pro_Russian_Donetsk_Militia
https://www.aljazeera.com/news/2022/3/14/ukraine-missile-debris-kill-16-in-donetsk-separatists
2019 Simulation of a Nuclear War Between U.S. and Russia https://www.youtube.com/watch?v=9rXXMDGhjUs
What If There Was A Nuclear War Between the US and Russia? https://www.youtube.com/watch?v=yj9_Cq65Bqw
I've studied nuclear war for 35 years -- you should be worried. | Brian Toon | TEDxMileHigh https://www.youtube.com/watch?v=M7hOpT0lPGI
How to Survive a Nuclear Apocalypse https://www.youtube.com/watch?v=xh8DMM_Vk-0 , https://www.youtube.com/c/HowtoSurviveShow/videos
https://paranormal-intersection.blogspot.com/search?q=nuclear
https://paranormal-intersection.blogspot.com/search?q=Ukraine
There are all sorts of WarGames and they don't all have a pleasant ending.