"The National Bank of Ukraine has some more measures. We hope that we will be able to stabilize the situation, using these measures, including NBU restrictions to strengthen the monitoring of the import foreign currency transactions on foreign trade contracts with advance payments," Gontareva said.

"We will not allow the situation to slip from our control," she said.

In addition, Gontareva said that the regulator would not announce in advance what measures could be taken.

"We have a very creative nation, so we have to keep it a secret,” she said.

“The measures should be swift and decisive. We don’t need [currency] destabilization, as it destroys the economy and the whole banking system.”