Region Locked CD-Key Question

im not are sure... but if you buy a RU key and active it, after you can play everywhere.
if is not possible, try to play steam in offline mode or without internet connection ;)

or... if you are a expert, use a proxy

bye

Well as long as you redeem your keys while in MD, there will be no problem. But make sure to buy keys only from trusted websites.

P.S. : Learn some english, bro !

If game has in Russian Steam Store "games from Russia/CIS playable in Russia/CIS", then you won't be able to play them when you'll get back for sure.
Games without that note - they should run.
BUT!!! Valve might not like this and accuse you of using VPNs, so you'd better get some receipts and tickets as proof, just in case some gung-ho employee decides he'll want some additional dollars for finding "abusers"...

Check the games on steamdb, there you can see if a game is restricted for activation only, or for playing too

Don't buy any cd-keys in CIS region. You have a big chance to get region locked game.