Final answer:
Eugene Rogan likely believes that the people of the former Ottoman Empire should have been involved in the drawing of postwar boundaries, as the lack of consideration for ethnic realities led to future conflicts.
Step-by-step explanation:
From Eugene Rogan’s quotations and the historical context provided, we can infer that he believes the diverse groups living in the former Ottoman Empire should have been involved in establishing the postwar boundaries for the area. This suggestion is based on the backdrop of the Great War, where the breakup of empires and redrawing of maps largely ignored the wishes of local populations for self-determination, as evidenced by the findings of the King-Crane Commission and the ultimate disregard for these findings in favor of colonial interests by powers such as Great Britain and France. The creation of nations post-war did not consider ethnic realities, leading to future conflicts.