According to https://www.cnbc.com/2022/02/24/ukranian-bank-suspends-e-cas... foreign exchange in Ukraine is mostly suspended though, and already was when I made my comment above, so the price in markets that are still open won't reflect what you see on the ground in Ukraine; the Tether price cited (32 hryvnia) suggests an additional 9% loss since yesterday, which does qualify as "free fall" if it continues.