Since this is a combat card, there is no way to play this if the Turks merely walk into a Russian VP space. Is that the intent? If you get this card too late (after Russia has collapsed) you may never get the benefits.
Yes. But note that a "Russian VP space" means "A Vp space in the Russia region" not "a VP space occupied by Russians". So even after the revolution has removed all the Russian units, you can still get the benefits of this card by capturing a space from the Georgians or Armenians, or by destroying a fort in Russia and advancing into the space.