The book "Mosul Issue" by Dr. Fadel Hussein is one of the significant historical studies addressing one of the most prominent issues in modern Iraqi history. The book deals with the issue of the Mosul province following World War I, when it became a subject of dispute between Iraq (under British mandate) and Kemalist Turkey, with the League of Nations intervening to resolve the matter.

The author presents the historical, political, and economic backgrounds of this issue, including Mosul's strategic importance due to its oil wealth and geographic location. It follows the developments of the dispute between Britain and Turkey and the proceedings in the League of Nations, culminating in the annexation of Mosul to Iraq in 1926 after the signing of the Ankara Treaty.

The book stands out for its reliance on important archival documents and sources, making it a fundamental reference for researchers in the history of Iraq and the region, and for understanding how the modern borders of the Iraqi state were formed.