In Russia, an effective monetary policy is possible.
Effective monetary policy is possible with successful inflation control and a strong national currency. A country cannot simultaneously regulate the exchange rate and successfully control inflation. The introduction of an embargo on foreign trade goods in a country leads to a sharp decrease in exports. If exports fall sharply, the national currency cannot be in this country. Regulation of the exchange rate is required to have a strong national currency.  There is an embargo on Russian foreign trade goods.
∀x (EffMonPolicy(x) → InfControl(x) ∧ StongCurr(x)) ¬(∀x (InfControl(x) ∧ ExRate(x))) ∀x (Embargo(x) → ExportFall(x)) ∀x (ExportFall(x) → ¬StongCurr(x)) ∀x (ExRate(x) → StongCurr(x)) Embargo(russia)