Russian government is increasing the gold reserve. But it has no plan to increase bitcoin now.
Most likely.
It's very difficult for such a large entity to start accumulating Bitcoin with how widely distributed the coins are. It's impossible to pump a few billion $ into Bitcoin without having it be a process that would take a year or two at the very minimum. I'm certain that they would do everything they could to make it look like it's not a government buying in, which requires proxies, funding them in a manner that doesn't pop eyes, more time, etc.
There are only like 5 million coins that are floating around, and there is a constant flow of demand that rises with every price increase we go through. Good luck trying.