FRANKFURT (Reuters) – German refineries have started reducing imports of Russian crude and oil products, a domestic industry group said on Monday, adding that the adjustment would not threaten domestic supply. The European Union has so far stopped short of a ban on Russian oil in response to Russia’s invasion of Ukraine that began on Feb. 24, but some operators have voluntarily ceased imports. “The mineral oil industry has started reducing imports of Russian crude oil and mineral oil products, especially diesel,” the Berlin-based German Fuels & Energy Association (en2x) said in response to an …