Assuming Trump bombs Syria, which appears to be likely, what will/can Russia do?
Plenty. What's more, they seem willing to respond.

This post will be quite short because instead of writing, I prefer the readers to watch this Blackstone Intelligence video (no relation to Blackwater). 24 minutes

Brief synopsis:

1. Russia urges 24 hours be allotted for international experts in chemical warfare be allowed to examine Douma

2. Trump marshaling large naval taskforce off coast of Syria, some ships within 100 km of Russian base.

3. France eager to get in on the action

All the cool and popular kids are bombing Syria these days, so the less cool kids want to be involved as well.
France hasn't bombed Syria since it was cool more than two generations ago. They are teaming up with the less than cool Saudis.

I'm not sure this is 100% true, but it sounds believable.

"Last war in the history of mankind", that's what Evgeny Buzhinsky, a former senior Russian general has warned could happen over this latest false flag chemical attack and the subsequent illegal bombing in Syria by one of Amerika's proxies, Israel. (see Below)

http://www.bbc.com/news/av/world-43629065/russian-tensions-with-west-wor...

Veterans Today has a shocking article with photographs asserting that when Syrian forces discovered the chemical weapons cache and factory in the rebel-held area near Damascus recently, chemical weapons were found with British and German labeling, among others.

Prisoners, Hostages, Tradewars,
and Weapons of Mass Distraction

Another week speeds by as spring (or fall in the really deep south) unfolds. This week it strikes me how easily we are distracted from understanding our world and situation. Some things seem so obvious. The oligarchs no longer make a secret of their domination. Just a glance at Brazil should make us aware (not to mention Venezuela nor Honduras....or even our own territory of Puerto Rico). The rush to create Russia as an enemy is obscenely obvious as diplomats are expelled across the globe without a shred of evidence. Truthsayers are silenced... Assange blocked from the internet in the embassy and Snowden is exiled to Russia. But like emerging seeds teachers are rising up across our country, students are speaking out, and movements are growing. It is time to escape the bonds of commercial corporate media and help people understand our common condition.

Technically Congress is the one with the power to say where our troops go and where they don't.
But that stopped being true several generations ago.

In place of Congress, the Commander-In-Chief gives the orders to the troops.