Ukrainian President Volodymyr Zelensky on Saturday announced an overhaul of state-owned energy companies, after a corruption scandal at the heart of a sector battered by Russian attacks sparked a public outrcy.Anti-graft investigators said around $100 million had been embezzled from the energy sector, causing outrage in a country where Russian attacks have resulted in devastating power outages.Zelensky ordered two ministers to resign over the corruption scheme and sanctioned a former business partner who was named as its mastermind.