Given the fact that the Yanks seem hell bent on ripping up treaties such as those ABM systems, along with sighting ABM systems in Europe (contravening said treaty), one can hardly blame the Russian airforce for upgrading radar systems and pumping up the tyres and changing the oil on their strategic bomber force.
Perhaps a revitalised military will give the world's remaining "superpower" cause to stop and think before going all Hollywood on us and invading anyone who looks at them in a funny way.