@anonimo
Assad whether we like him or not was the legitimate ruler of Syria before the turmoil. Sovereign rulers have the right to ask foreign governments for military assistance. Somalia is doing the exact same thing with Al-Shabaab.
Israel and America want Assad gone, this tells me more than enough who the good guy is. Israel and America do not have the long term interests of the Middle East in mind.
Israel currently supports the Ukrainian government, although in a low key way. This again provides me enough info on who not to support.
Rule of thumb for me when it comes to international politics, opposing side to Israel are usually the good guys.