By Stephen Jewkes MILAN (Reuters) -Europe’s biggest utility Enel followed in the steps of other energy companies on Thursday by flagging its intention to reduce its exposure to Russia. “We have decided we cannot deploy more growth in Russia and are also exploring scenarios for the future of existing assets,” Chief Executive Francesco Starace said in a call on results. Enel, whose biggest shareholder is the Italian state, operates in Russia through Enel Russia, which runs three gas-fired power plants with a capacity of 5.7 gigawatts. It also has two wind power farms. “Clearly it’s a situation w…