Ukrainian President Volodymyr Zelensky paid a visit to troops near the eastern front on Monday after spending the weekend in Germany trying to rally Kiev’s allies, and he later stressed the situation on the front line remains “extremely difficult.” “I am happy to be here today and to see you,” he said as he presented medals to combat troops during a ceremony at a command post near the city of Kupiansk in the war-battered Kharkiv region. In his daily video address released in the evening, Zelensky described the situation as “extremely difficult in several parts of the frontline, where Russian t…