Nov 3 (Reuters) - Russian forces are likely to abandon their foothold on the west bank of Ukraine's Dnipro River, a Russian-installed occupation official said, signalling a massive Russian retreat that, if confirmed, would be a major turning point in the war.FIGHTING* Ukrainian forces can retake the strategic southern city of Kherson from Russian troops, U.S. Defense Secretary Lloyd Austin said, in what would be a major defeat for Russia in its invasion of its neighbour.* Europe's largest nuclear power plant has again been disconnected from the power grid after Russian shelling damaged the remaining high voltage lines, leaving it with just diesel generators, Ukraine nuclear firm Energoatom said.* Ukraine said it had made no commitments to Russia that go beyond the terms of the Black Sea Grains Initiative agreed in July to persuade Moscow to resume its participation in the deal.* Ukrainian President Volodymyr Zelenskiy congratulated Benjamin Netanyahu for winning the Israeli election and said he expected to "open a new page in cooperation" with the new government."