of interest:

Explain to me, please, those who understand why, with some real steps of Russia, the value of the ruble falls, and with all the wathanalia in Ukraine, their hryvnia is still stable?

February 5, 2014 - the rate of hryvnia 7.99 per dollar
March 30, 2014 - the rate of hryvnia 10.99 per dollar
The rate increased by 37% in 2 months.
Somehow I did not perceive the expression "stable".