Cash is king in that scenario (provided it's not the Russian ruble)
This sentence, mainly the parenthesis, got me thinking of how messed up and manipulated the centralized world is.
Think about it in comparison.
Ukraine is being invaded, it has lost a lot of its infrastructure, its economy doesn't exist, the military is mostly destroyed, millions have fled the country, analysts claim Putin's plan is scorched-earth strategy, ... and yet Ukraine fiat only dumped 5% which makes no sense!
Then we have Russia that is the invader, hasn't lost any infrastructure since there is no attack on Russia!, hasn't lost anything economy wise, the sanctions are mostly jokes that don't really target the economy (eg. sanctioning Russian cats, athletes, porn sites,etc.) and yet Russian fiat tanked 40%!
Sorry to go off-topic but it was an interesting observation that I can only explain as market manipulation (I'd love it if someone could explain any other reason opposite of what I said).