It's not really a nuke as some processes might be protected. The nuke is to use debugger privileges. Far Manager can kill processes using debugger privileges, that will literally nuke anything and in an instant: the app won't even receive any signals or anything.
The end task doesn't terminate the app, it only sends a message to the window to close itself. The app will then decide what to do on its own. For example, if the app has multiple windows open, it might close the active one, but still continue running with other windows open. Or it might ignore the message completely.
It matters a lot when the country can't sustain its banking industry for decades. Also ABLV was closed in 2018, way before the war. So stop spreading dumb bull shit, ok?
I don't think they work as intended. Most middlemen are still Russian, thus this money circulates inside the economy propping it even further. That's why the Russian economy is on the rise and the German one is in decline.