VLADIVOSTOK, Russia - President Vladimir Putin on Wednesday threatened to cut off energy supplies if price caps are imposed on Russia's oil and gas exports, warning the West that it would be "frozen" like a wolf's tail in a famous Russian fairy tale.

Speaking at an economic forum in the Pacific city of Vladivostok, Putin said European calls for a price cap on Russian gas were "stupid", and would lead to higher global prices and economic problems in Europe.

The Group of Seven announced plans to impose a price cap on Russian oil exports last week in a move that could also restrict Russia's ability to secure tankers and insurance from countries beyond the G7.

Russia would walk away from its supply contracts if the West went ahead with its plans, Putin said.

"Will there be any political decisions that contradict the contracts? Yes, we won't fulfill them. We will not supply anything at all if it contradicts our interests," Putin said.

"We will not supply gas, oil, coal, heating oil - we will not supply anything," Putin said.

"We would only have one thing left to do: as in the famous Russian fairy tale, we would sentence the wolf's tail to be frozen."

Russia is the world's second largest oil exporter after Saudi Arabia, the world's top natural gas and wheat exporter. Europe usually imports about 40% of its gas and 30% of its oil from Russia.

Putin said Germany and Western countries themselves were to blame for the Nord Stream 1 pipeline not being operational and that Ukraine and Poland decided on their own to switch off other gas routes into Europe.

Europe is facing a winter fuel crisis and surging energy bills after Gazprom fully suspended gas supplied through Nord Stream 1, after it said it found an engine oil leak during maintenance work.

"Nord Steam 1 is practically closed now," Putin said as he called Germany to return a turbine for the pipeline's Portovaya compressor station that would allow Russia to resume pumping gas.

"There is an oil leak there - it's a possibly explosive situation, a fire hazard. The turbine cannot work. Give us a turbine and we will turn on Nord Stream 1 tomorrow. But they don't give us anything," he said.

But Putin said Moscow was ready to turn back on the crucial Nord Stream 1 gas pipeline to Germany as soon as a key turbine was returned to Russia from repairs.

(Reporting by Vladimir Soldatkin; Writing by Jake Cordell; Editing by Guy Faulconbridge)