This is just one of the reasons Syria is a National Security interest for other countries. Another is that Ba'athism in Iraq and Syria has aligned itself agains

This is just one of the reasons Syria is a National Security interest for other countries. Another is that Ba'athism in Iraq and Syria has aligned itself against Saudi Arabia. Another is that the possibility of autonomous Kurdish regions in Syria threaten to support domestic terrorist organizations in neighboring countries (Kojave). Another is that Syria provides Russia with a Mediterranean base. The gas pipelines are a huge reason, for sure. But it's not the only reason. Many different actors have many different reasons why supporting their side of the proxy war makes financial and strategic sense.