His recent work uses the relationship between decency and moral accountability to study the growing political pressures that threaten the liberal international order.

Roach also has conducted extensive field research in South Sudan and written on the many challenges facing the country, including corruption, food insecurity, accountability, and extreme violence.

Prior to this he was awarded a Fulbright Scholar grant to teach and research at the Universidad Autónoma de Madrid, where he was recognized as Honorary Professor.

[7] In 2020, he was appointed Country Expert of the United States Agency for International Development (USAID) Democracy, Human Rights, and Governance (DRG) assessment team in South Sudan.

[9][10][11][12][13] Two of his books, South Sudan’s Fateful Struggle and Moral Responsibility in Twenty-First Century Warfare, were the recipients of CHOICE Magazine’s  Outstanding Academic Title (2021, 2024).