Ukrainian forces can retake the strategic southern city of Kherson from Russian troops, U.S. Defense Secretary Lloyd Austin said on Thursday, in what would be a major defeat for Russia in its invasion of its neighbor. Austin's remarks coincided with a Russian-installed official in Kherson region saying Moscow was likely to pull its troops from the west bank of the Dnipro River, signaling a significant retreat, if confirmed. Ukraine said it was still fighting in the area and was wary of the occupying Russian forces setting a trap. Austin did not answer a question about whether Russian forces were preparing...