MILAN (Reuters) – Italy on Monday froze some real estate properties owned by two Russian oligarchs in the luxurious seaside resort of Portofino, in Sirmione on Lake Garda and in Rome, two sources with direct knowledge of the matter said. Guardia di Finanza police seized Villa Altachiara, a mansion with a park on the Portofino promontory on the Ligurian Sea, and a property and a car in Rome from Eduard Khudainatov, the former chief of Russian energy giant Rosneft. Khudainatov was placed on the EU sanction blacklist following Moscow’s invasion of Ukraine, one of the sources said, adding that his…