I'd imagine they'd just stick to the red zones:

Russia isn't and doesn't consider itself Western. It doesn't focus on global ramifcations or perception. It marches to the beat of its own drum like it has for hundreds of years and like the people that have lived in that area for thousands of years. They were hit, now they want to hit back hard. I'd be stunned if Putin was even thinking about or concerned with how a response like this will impact the muslisms perception of the west. I doubt they care.

only those with tinfoil hats that live in their mothers basements would do anything but laugh at that report. Lets ignore the human casualties for a moment and the massive backlash Russia would face and look at the economic fallout. Russia has huge financial interests in Syria as well as political ties, they aren't abandoning billions of dollars and suffering the backlash such an action would take just for revenge, especially when they have the conventional weapons arsenal to easily deal with the region should they choose to do so.

Woo easy there fella, the op did not ask for Common sense. So it would be great if you could keep some of that common sense to yourself thank you very much. 

Still civvies, still religious and historical artifacts. ISIS members have kids too and they'd wanna minimise the deaths of them even though they know they probably can't.

But ISIS aren't a global super power with a huge arsenal. There weapons are those leftover from previous wars and funding from oil & Arabs, they aren't a threat to Russia, so it makes more sense for russia to find targets and take them out one-by-one.

http://nuclearsecrecy.com/nukemap/

most nukes arent as widespread damaging as some of you might think. A small nuke withh a 15-20 mi. radius in vast deserted isis occupied land can either cause isis to fear and die, or it will make them grow stronger with revenge.

Knock them the fuck out like Rousey.

I never mentioned the west, i said developed. And of course Russia cares. Their relationship with other developed nations might be somewhat strained (and they have a tendency to see how far they can push the rules, as with China), but they are fully aware of the economic strain the rest of the world is capable of putting on any country that's dependent on the global economy (which Russia is). There are few things that would actually get the world to do something like that, because the rest of the world doesn't want to make a true enemy of Russia anymore than Russia does everyone else, but the aggressive use of a nuke would all but guarantee such a response.

And of course they care about how the people of the affected region would view them. What's the point in 'hitting hard' if all you accomplish is making your enemy stronger, and pissing off the entire world. Russia might like to see how far it can push the rules, but they aren't stupid.

Outside of ISIS acquiring and using nukes themselves (or something equally deadly/dramatic), the world will never be scared or angry enough to allow the use of nukes by a developed country without significant ramifications, both internally and externally. Quite rightly so.

Ok, again not speaking from my own perspective but rather identifying other perspectives, but I seriously doubt the world would be mad at Russia if they nuked ISIS. I can't tell you how many times I've heard people I know say "we should all just nuke the muslism and wipe them out since they just want to kill each other and the rest of us." I hear people saying this over and over again because of their attacks. Again, I don't agree with that mentality as a Christian (I'd rather people live to hopefully turn their lives to Christ), but it is one I see and hear a lot from people. This leads me to believe that if Russia did nuke ISIS, most (imo) would not complain because it's what a lot/the majority of people in the "developed world" would want in the first place, but are too moderate to suggest it.

The people in that region already hate the rest of us. Even if developed nations didn't do anything in their countries to tick them off, the islamic religion calls us all infidels. Muhammad marched and slaughtered his enemies and possibly raped people, whose the founding pillar of their religion. That isn't peaceful sounding at all. I don't want muslims to die (I want them to live and believe in Jesus), but a lot of people probably think our lives would be better off without people that are brainwashed by groups like ISIS, Al Queda, El Shabob (I don't care if I spell it incorrectly as they don't deserve to have my concern on spelling) and islamic theocracatic nations to hate and kill us.

I'm confident that if the islamic extremist could use a nuke, they would, without a doubt.

Hahaha, pure BS.

Do people realize ISIS by the CIA's own estimates is only 30,000 or so troops? Freaking Ethiopia has a larger standing army. 

If the US or Russia reeeeeally wanted to they could wipe them off the face of the planet like a bug in a week without much fuss with regular weapons.