Which theological issue was primarily discussed at the Council of Constantinople II?

The Council of Constantinople II, convened in 553 AD, primarily addressed the nature of Christ and the Monophysite controversy. This theological issue revolved around the understanding of Christ's dual nature as both fully divine and fully human, a point of significant contention in early Christianity. The Monophysites, who held that Christ had only one nature that was divine, opposed the dyophysite view, which affirmed both natures. The council sought to resolve these disputes, reaffirming the decisions of previous councils, particularly the Chalcedonian Definition, which articulated that Christ is recognized in two natures, without confusion, change, division, or separation.

The discussions at this council were crucial for the early Church's development and the establishment of orthodoxy regarding Christology. By focusing on the nature of Christ, the council aimed to bring clarity and unity to a fragmented Christian community, particularly in the Eastern Roman Empire. This emphasis on Christological debates also defined theological discourse for centuries to come and played a vital role in shaping the relationship between the Church and various theological factions.