It will take years for Russia to replace its natural gas customers in Europe with customers in Asia.

He told the Financial Times that he wasn't selling onions in the market. You have to build a lot of things. This will take a long time.

Russia will not be able to keep up with its energy production because of the sanctions.

Russia has lost the energy battle against Europe, which is looking for alternative suppliers, because of its cuts to gas flows to Europe.

Russia has lost a great client. The client paid on time and there were no political problems.

Europe's energy crisis could threaten unity amongst EU members, he warned, saying he feared a wild west scenario in which countries restrict trade or stop cooperating in order to secure their own supplies for the winter.

The implications will be very bad for energy, very bad for the economy, but very bad politically, according to the head of the global clean energy action forum. It can go beyond energy implications if Europe fails this test.