>>Banks don't want to deal with volatile currency, even Russian banks make out mortgage loans in USDs. But Russians get paid in local currency. If that crashes

>>Banks don't want to deal with volatile currency, even Russian banks make out mortgage loans in USDs. But Russians get paid in local currency. If that crashes in relation to the usd, go ahead, make the $280 mortgage payment. It will be xx% more expensive this month while your salary and expenses stayed the same.