1991 when the sole reason for its existence fell
Russia still exists so what are you on about?
The soviet union doesn’t, but the power was always concentrated into Russia, and guess what, Russia wants their territory back now. The countries which existed under the USSR and never want Russian rule again? Russia sees them as rightfully theirs. I for one am glad to have NATO protection. And I’m glad something is being done to help our brothers in Ukraine, because they weren’t as lucky as we were, to join the EU and NATO.
Commercial ones would work I think, but viewing angles can be off on at least outdoor models.