Here’s the video from Brian Berletic you mentioned: https://www.youtube.com/watch?v=XCCh8-nE7Z0
The key source they both are referencing is the NYT bragging about CIA bases in Ukraine: https://www.nytimes.com/2024/02/25/world/europe/cia-ukraine-intelligence-russia-war.html
There is no ‘stretch’ about this if even the NYT is talking about it in the open.
This is a huge misconception lots of people have with nuclear bombs. All modern nukes are around 0.5 megatons, so no modern nukes are Tsar Bombas. That means each nuke cannot wipe out more than a ~5 mile radius max.
Humans have already tested more than 2000 nukes and we’re still here.