When the Russian Federation launched its unprovoked invasion of Ukraine, the world quickly responded with a variety of sanctions and attempts to isolate Russia and its leaders. In addition, the financial world saw its own response with Russia's currency collapsing in value. To combat this, Russia made a number of specific institutional decisions. Describe those choices and their economic purpose from a technical perspective. Then, using the tools from this unit, what can be inferred about the financial vulnerability of Russia from such selections? Be specific in how these policy choices are meant to insulate the country from these risks. Are these choices stable in the long-run? Be sure to cite your sources and the specific policy changes.

** please give me the correct answer with explanation also give me the conclusion as it is mandatory.