John McCain and his advisers have been awfully cozy with Kremlin over the years. The senator/candidate has been very sharp and aggressive when he's talked about Putin (and Georgia) on the campaign trail, but that's a front. For years, McCain has worked hand-in-glove with Russian leadership.
" ... Despite McCain's tough talk, behind the scenes his top advisers have cultivated deep ties with Russia's oligarchy--indeed, they have promoted the Kremlin's geopolitical and economic interests, as well as some of its most unsavory business figures, through greedy cynicism and geopolitical stupor. The most notable example is the tale of how McCain and his campaign manager, Rick Davis, advanced what became a key victory for the Kremlin: gaining control over the small but strategically important country of Montenegro."
Details of the relationship are here.