Ukraine’s eastern front near Donetsk has effectively collapsed as troops suffer from exhaustion, a Ukrainian general said, as Russia took another town in the region and began a strategic nuclear drill. Major General Dmytro Marchenko, who gained a name for himself with the successful defence of Mykolaiv and Kherson in southern Ukraine at the start of the war, made the remarks in an interview with a former parliamentary deputy. “We all know that I’m not revealing any military secrets when I say that our front has collapsed,” Marchenko said in the interview published late on Monday. Marchenko att…