[Straight Vermonter]

I personally think they couldn't handle the weather change.

Finding the most recent Neanderthal traces so far north would seem to back that up. It's possible that Neanderthals followed the glaciers north as they receded.

[spokeshave]

They show that Mousterian culture may have lasted longer than scientists had originally thought.

...alive and thriving throughout the middle east

Neanderthals all.