Fairly plausible but not a certainty.
one concern is that the West doesn't think like the Russians do, and vice versa. For example, Russians are more likely to view economic "attacks" as war than the West (where we basically view it as part of the game / we dont' care because we own everything anyway).
Conventional war wouldn't be the end of the world for the US. Nuclear war would be a problem, but not my problem.