How about, the value of the Ruble is going down because there is a war, and Russia’s own resources are going into things that get used up in combat or destroyed, instead of making things (other than oil/gas) that can be exported. Variations happen to most countries in a large scale war.
“Russia’s own resources are going into things that get used up in combat or destroyed, instead of making things (other than oil/gas) that can be exported.”
Since roughly 1991, Russia’s only exportable goods have been oil. natural gas, and weapons (the latter only to its few remaining “allies” or corrupted African dictators).