Are you for real? They have a defence for killing innocent civilians? Pray use your obvious intelligence to let us know what it is and justify it.
You'll never see me justifying the deaths of innocents, but I can tell you what each belligerent's justification is and how fair they match up with each other. And then tell you how this relates to Donald Trump.
Here is Russia's defence again:
they are only bombing in a country for which they have State permission.
Recap:
Syria is accused of violent suppression of its own people (which they deny) and thus come under attack from a rebel force and is suffering heavy losses, including civilians. The government is on the edge of existence. This rebel force is supported by a US-led coalition. Russia offers to assist Syria by way of air strikes on zones where the rebels are based. They warn this will inevitably result in civilian casualties. But Syria either lose or accept the offer. After one year of Russian intervention the rebel threat has lessened, but there's still no end to the conflict in sight.
It's all abhorrent. Anything that wilfully ends the lives of others is abhorrent. But merely denouncing it as such doesn't much aid understanding.
We could rank how horrible the different players are in terms of what their defence is and how many civilians they've killed, with the following figures all reasonably well sourced but we still have to guesstimate as most sources are biased one way or the other...and there's still plenty of fog out there. As we don't know otherwise, we have to assume those civilians killed were 'collateral damage'.
Assad & Syrian government killed circa 100,000 civilians. Defence: their actual defence of the country, government and Aleppo.
Rebel forces/ISIS have killed circa 100,000 civilians. Defence: they wish control of Aleppo, the government and eventually Syria. Also of note: US-led coalition (including Saudi Arabia) have partly-armed these forces.
US and US-coalition air strikes have killed circa 1000 civilians. Defence: the Syrian government are accused of committing crimes against humanity, as such the US wish to affect regime change.
Russian air strikes have killed circa 3000 civilians. Defence: they have State permission and wish to end the conflict by defeating the rebels/ISIS.
I've put the main local players at 100k civilian deaths each as even anti-Assad organisations max out the civilian death toll from Assad forces at 140k, whereas the total civilian death toll is comfortably above 200k. I'm also classing the rebels/Free Syrian Army/Al-Nusra/ISIS as one group as they are ostensibly all on the same side fighting the same side. Things get very muddy if we delve deeper here, there is plenty of 'inter-rebel' conflict too.
In terms of who has the most justification for the killing of innocents (an awful concept to comprehend, but a neutral analysis requires it), I'd say it's Russia.
And that's why a Trump Presidency could be interesting, as he will work with Russia, not against them. For without US-led intervention, Russia's state-sponsored actions may have already ended the conflict, resulting in far fewer civilian deaths than we've had so far.
Hope that's a bit clearer now.