MYKOLAIV REGION, Ukraine - On the front line in southeast Ukraine, there is little sign that a major counteroffensive is brewing. For weeks, Western intelligence and military analysts have predicted that a Ukrainian campaign to retake the strategic port city of Kherson and surrounding territory is imminent. But in trenches less than a mile from Russia's positions in the area, Ukrainian soldiers hunker down from an escalating onslaught of artillery, with little ability to advance. (clip) But time is slipping if Ukraine is to meet President Volodymyr Zelensky's stated goal of winning the war by the end of the year,...