All talk, they haven't got the money.
The Russians built up a cash pile when oil was above $100 a barrel, they break even at about $60, now they're in real trouble. They've used up over half the reserves trying to stop the Rouble slipping.
If they build anything it will be the army/internal forces to prevent another revolution.
For a good background to their current situation read the posts at this site:
The Streetwise Professor.
e.g.:
Whither–or is it Wither–the Oligarchs?
More on Strains in the Power Vertical
Kudrin Channels SWP