That was an afterthought, but you sure loved to jump on it like it was the main argument. We can stick with civil wars in the modern era if you like.
Out of the last lets say 5-10 civil wars that have happened on planet earth, how many of them saw a foreign country invading in response? I genuinely don't know the answer here but I strongly suspect its close to 0.
Its just a fucking off the wall thing to be so certain about. Its one of the dumbest things about online discourse. Everybody has to be so fucking sure about everything. On this forum alone, we've got people who can identify the exact details of military explosives from a grainy tiktok video, calculate the precise volume of seawater needed to flood the Hamas tunnels, and in this case predict the exact consequences of a civil war - consequences that they're really sure about even though there is apparently little precedent for it happening.
but ok! noted, we're definitely getting invaded, much of the future remains a little uncertain but that detail is carved in stone.