Climate change was likely a factor in 2015.

https://www.dw.com/en/how-climate-change-paved-the-way-to-wa...

> even the repeated blatant lies

It is difficult to have a reasonable discourse when starting with such overkill positions. The topic is way too nuanced. The civil war in Syria had many reasons, political, economic, religious, but also environmental.

Climate change massively increases the risk on water supply and harvesting yields, and if that risk manifests in a situation where people are already unhappy due to other reasons, it can be the trigger for large-scale reactions.

With all that having many factors, you'll rarely be able to point to one thing as "the" cause. That does not make it less relevant, though.