(FILES) In this file photo taken on April 27, 2022 the logo of Russia's energy giant Gazprom is pictured at one of its petrol stations in Sofia, Bulgaria. - Russia has halted gas deliveries to Germany via a key pipeline for an indefinite period, after saying on September 2, 2022 that it had found problems in a key piece of equipment, a development that will worsen Europe's energy crisis. Russian gas giant Gazprom said Friday that the Nord Stream pipeline due to reopen at the weekend would remain shut until a turbine is repaired. In a statement, Gazprom indicated it had discovered "oil leaks" in a turbine during a planned three-day maintenance operation. Gazprom added that "until it is repaired... the transport of gas via Nord Stream is completely suspended". (Photo by Nikolay DOYCHINOV / AFP)