According to Alexey Ryabchin, adviser to the head of NJSC Naftogaz of Ukraine, America’s sanctions are not doing anything to hurt Russia. As we read in Ukraina:

It is impossible to cause economic damage to Russia as long as its energy resources are bought in Europe, Alexey Ryabchin, adviser to the head of NJSC Naftogaz of Ukraine, said on the air of the Ukraine 24 TV channel

Russia receives about three-quarters of its income from energy exports to the EU countries through the sale of oil and one-quarter from gas supplies.

“The fact that Russia received $30 billion in monthly income from gas trade with Europe completely eliminates the sanctions imposed by these (European) countries,” Ryabchin said.

Due to the sanctions imposed against Russia by the US and EU countries, the exchange rate of the national currency of the Russian Federation for some time fell to about 120 rubles per US dollar, but in April it stabilized to the February level.