At that time, Prince Arthas and his mentor Uther had a fierce debate; Prince Arthas insisted on quickly eliminating the people of Stratholme to prevent the plague from spreading. However, Uther argued that this was inhumane and opposed Arthas's order. Consequently, Arthas dismissed Uther and personally led troops into Stratholme, killing every living being inside.
After that, under the Dreadlord's influence, Arthas went to Northrend and eventually fell. When he returned from Northrend, he personally killed his father and turned the whole of Lordaeron into its current ghastly state.
And the young women debated whether Arthas's choice was correct.
Of course, to Duanmu Huai, Arthas did nothing wrong. In fact, if it were the Tribunal, for safety's sake, not just Stratholme but the entire Plaguelands would have been massacred completely. Then everything would be burned to ashes to prevent the outbreak of the plague as much as possible.
