Ukraine is attacking Russian factories. These factories produce fuel. Now there is less fuel.
Russia has problems with money. Fuel is becoming more expensive. People have to pay more.
In some places, fuel is running out. In big cities, it is still available. An expert says that Ukraine needs to attack more to deplete fuel in Moscow.
Russia knows that fuel shortages are bad. People remember the old times when there was no fuel.
Russia is used to problems. They solve them as before. Fuel is transported from far away by ships. It is expensive. In some places, fuel is left out.
The army always gets fuel. But Ukrainian attacks are reducing it. This is visible on the southern front. Russia cannot advance there.