If Russia merges Belarus and Ukraine with itself, that means Russia returning to 80~85% of old glory, without the baggage of communism.
USA has till now tried to use India as a whip dog against China. Current dispenstion has rightly not taken the bait to a great extent.
If India plays a well balancing game, US out of desperation will be forced to give substantial favours and not just use and throw us.
A favourable trade deal, not dictating economic policies favourable to US MNC's, less interfence in our internal especially religious and demography related issues, weapon systems that we want not that which they want to force down our throat and some infra investments in India will do it.
Meanwhile as of now with popcorn in hands wishing best of luck to Russia.