when inflation rates were at their peak, the russian banks ran out of rubles. during these weeks in 1992, i went with other american friends with my dollars in the early hours of the morning, and waited in queues with other customers to try to change money. usually by the time we got to the front of the line, the rubles were gone, and a handwritten sign reading "nyet deneg" hung in the door, announcing that the bank had no money.