Those who have kept an eye on news sources from Russia, Iran and Syria and alternate ones from Western countries, especially the USA realise Islamic terrorism has largely been created and supported by Western countries, particularly USA for use as proxy mercenaries to further covert agendas of their banksters, corporations and military industrial complex. What they want in the Middle East is small fragmented states with puppet governments that take orders from Washington. Not like Syrian President Bashar Al Assad, who is obviously popular with his own people and tries to act in their interest.

The USA, Saudi Arabia and Qatar especially have been attempting "regime change" largely because the recognised government of Syria will not allow them to build a pipeline from south to north across Syria to carry gas to Europe via Turkey. Even worse to them, the government has favourably considered an east to west pipeline across Syria to carry Iranian or Russian gas to Europe, which weatern interests would not control.

Have seen a good analogy of how the likes of the USA often behaves. They covertly set fire to your house. Then come racing around pretending to fight the fire. However, they are mainly there to see what they can loot and set up opportunity for further theft. The Russians helping the Syrian government exposed that the USA and its coalition partners were not serious about fighting the majority of Islamic terrorists.

Also, remember countries having military personnel in Syria without authorisation from the Syrian government or the United Nations Security Council is against international law.