The refugees are a direct result of the conflict in which Russia wants to stop the Saudis from constructing an oil pipeline through Syria to Europe, which would compete with an Oil pipeline from Russia through Ukraine to Europe.
Both wars are to get a pipeline built.
Saudi Arabia supports anyone who fights the Assad Regime, and Russia supports the Assad Regime.
The war in Ukraine is to control the pipeline rights.
America has wanted to support the Saudi pipeline.
All effects of the wars in Syria and Ukraine are a result of these goals.
Of course, that is merely my opinion. Your mileage may differ.
If the pipeline was built, these wars would be over.
There is no other economic benefit to taking over Syria.
Russian Motives - Thanks for concise thoughts!
Assad opposes the Saudi Oil Pipeline, and receives massive foreign aid from Russia, including the presence of Russian Naval basing rights in Syria.
Ukrainians want their own nation, and do not want to cede authority to Russian to cross their terrain.
Now, Russia is starting to attack ISIS, as it is an arm of Saudi interests.
It is all related to oil.
You are correct.