Iran–Syria relations

No, Iran is under a terrorist regime we have no reason to even recognise or treat Iran like a country after what they did with us. We only have good relations with Russia because they're offering something in return, unlike Iran who can't possibly offer anything other than terrorism and occupation. More on reddit.com

The Russians are considered the main support of Assad and his regime in their war against the rebels, but the combat assistance they provide is mostly just from the air, which is not enough to repel the rebels or even cause them too heavy losses. The regime also needs maneuvering ground forces for attacks. and this is provided by the Iranian Revolutionary Guards, Hezbollah, and the Syrian Shiite militias, whose men Hezbollah commands. In its current state, the battered Hezbollah is unable to help Assad, whose army is small and ill-equipped. Although Israel did not intend to, its attacks in Syria provided the rebels to the Assad regime with the opportunity they had been waiting for. The Revolutionary Guards and the militias loyal to them were concentrated in assisting Hezbollah. With the ceasefire between Israel and Hezbollah, they decided to act, a gamble that has so far been successful, and made it possible to take over the second most important city in the country. The situation in Syria should lay to rest the idea that Hezbollah won. If it won it wouldn’t be sitting on its ass. More on reddit.com

Should also demand from Russia.

More on reddit.com

They're not really contiguous so that poses a logistics challenge. None of these countries (yet) have large expeditionary forces. Russia's navy is leaning towards a strategic deterrence force. China's navy is growing but is untested and will likely find it hard to sustain long and distant missions. (they have an old Soviet era and Soviet copy aircraft carrier and one modern one being commissioned - now all of them conventional powered). China does not have a 5th gen carrier capable fighter. And it isn't clear that China has expeditionary capability or doctrine. And mutual defense alliances are tricky (see CSTO). Large countries don't really want to tie their hands militarily and diplomatically with rogue or unpredictable regimes. In that sense, China would not see it in their interest to sign a defense pact with Syria, for example. Syria isn't important to them economically, diplomatically or geopolitically. If they sign an agreement and Syria gets into trouble - then China is in a lose lose situation. If they get involved - it is money, lives and diplomatic capital spent on an unimportant country to them. If they don't get involved, then no one trusts their agreements in the future. More on reddit.com