Russia continues to redeploy significant assets in ways that look like it is preparing for war. It has chosen to redeploy dozens of deniable Wagner PMC assets from Africa to Europe, and is today moving its Pacific Fleet through the Suez Canal to take up position somewhere closer to Europe -- the final destination is unclear at this time, but even from the Mediterranean they could provide some support. Like the existing deployments of forces on the border, the Pacific Fleet maneuver is expensive and cannot be maintained for a very long time without sacrificing a strategic asset in a strategic region.
My personal guess is that the Russians will use Belarus to provoke (or more likely fake) a Ukrainian 'provocation' the Belarussians will respond to, allowing Russia to invade under the pretense of defending its allies from Ukrainian aggression. They will use the overwhelming force they are accumulating behind special operations and aircraft fires to rapidly seize and hold the eastern half of the country only, I estimate, where most of the population speaks Russia and conceives of themselves as Russians. If they then consolidate that position, there will be a long front that can be dug in and defended. Western diplomatic pressure to make them concede it will be exactly as effective as it has been in South Ossetia and Crimea, i.e., not at all.