In 2008, an official statement by ADM defended Bello from accusations made by the Chaldean Syriac Assyrian Popular Council, which alleged that he had exploited his position as mayor in order to prevent them from meeting with the United Nations in Iraq.

In an interview with Religious Freedom Coalition, Bello stated "Christians are the meat in the sandwich between the Arabs and the Kurds...", and advocated for the designation of Nineveh as an administrative unit within Iraq.

Bello mentioned that he wasn't able to count the remaining Assyrian families living in Tel Keppe, but expressed hope for the future and for his role as mayor of the town.

[5] Facing demographic changes in his district, Bello advocated for religious minorities by saying in December 2019, "Our territories used to have a Christian trace, but that is not the case anymore" and "If the constitution is amended, our rights and protection must be included.

[10][11] Bello continued to work towards helping the remaining Assyrian population in Tel Keppe, providing opportunities for building necessary structures and encouraging returns of former inhabitants.

[12] In 2024, Bello was removed by the Babylon Brigade and Rayan al-Kildani in a mass leadership change of Christian and Yezidi leaders in the Nineveh Plains, and replaced by Raad Naser.