A drone attack on Sept. 9 sparked a fire at an industrial facility in Novy Urengoy, a city just south of the Arctic Circle that is considered Russia's unofficial gas capital, regional Governor Dmitry Artyukhov said. The facility is about 3,000 kilometres from the Ukrainian border in northwestern Siberia. The region holds an estimated 26.5 trillion cubic metres of gas reserves, enough to cover global demand for more than six years. Gazprom once exported gas from the region to Western Europe before ties collapsed after Russia's 2022 invasion. Ukraine's Special Operations Forces said the strike was Kyiv's deepest attack into Russian territory since the war began. It was described as the first such strike on Russia's gas-producing heartland.