They do however have the main Russian gas pipeline
Pipe lines are easily replacable. I'm thinking something that will take a while to repair.
Pity some of the yuppie European countries were on their border.
1) Make a premptive annoucment to the population that in the case of Russian invasion the populations should leave the citys and head for the European union and claim assylum. This would do two things, one clog up the roads to make it harder for Russian armor to move. And next make the EU p!ss their pants and maybe try to prevent it getting that far in the first place.
2) In case that fails, don't bother using your airforce to attack the invasion force, use it to attack targets in Russia. Nuclear power stations, the Kremlin if possible, and Natural gas plants. Along with anything else that can be used for major logistics.
Now thats all bull from someone who doesn't have a clue, but hay its a nice thought.