I don't think the rivalry between the US & Russia went away completely.
We as a country, though, seemed to settle into the view that a post-Soviet Russia was a warm, snuggly Russia, even though the American news program
60 Minutes did a story on the spooky, gradual rise of pro-Soviet nationalism in Russia just a few months ago. Hell, an ex-singer of mine, who's Russian, told me last year that things were getting a bit "old school" last time she visited Moscow.
It also overwhelmingly worked to the Russians' advantage that the moron in the White House was fundamentally convinced,
from personal relations with Putin, that the Russian Federation would never act like the old Soviet Union, and therefore didn't require as much watching as in the past. That Dubya's own Secretary of State (whose expertise on Russia & the Soviet Union is highlighted in her
OFFICIAL WHITE HOUSE BIO) was also caught as off-guard about the Georgian invasion as they all were with 9/11 shows that foreign relations has never been their strong suit.
That the US recently concluded a treaty with Poland to base short-range missles on Polish territory after years of courting former Soviet Bloc nations, and that Dubya has been pushing, the last few years, for the mythical "missle defense shield" aimed at preventing Soviet/Russian nuclear attack only
ensures future misadventures as these instances only provoke Russian national paranoia.
Gotta say, though, it was surprising that the Russians hadn't flexed their old imperial muscles before the latest incident. With their economically weak 20th Century adversary militarily tied down in a new Vietnam, and with a huge nuclear arsenal to keep the world at bay, how soon before .....