The National Catholic Register (NCRegister) portal reports on a May 13, 2026, Fox News interview with U.S. Secretary of State Marco Rubio, in which he reflected on his meeting with the conciliar antipope, Leo XIV. Rubio emphasized a “clear distinction” between the role of the “Catholic Church” and that of a nation-state, asserting that while the Church advocates for peace, a nation-state has “different” duties, including the use of military force when diplomacy fails. He cited Iran and World War II as examples where diplomacy was insufficient, concluding that “the realm of the geopolitical is different” from the religious office. Rubio also described his meeting with Leo XIV as “positive and unusually straightforward,” noting they discussed global issues and the “plight of Christians.” This article, while presenting a seemingly pragmatic view of international relations, fundamentally undermines the Catholic doctrine of Christ’s universal kingship and the Church’s divinely ordained authority over all aspects of human life, including the temporal order, thereby exposing the deeply entrenched modernist and naturalistic errors that permeate the conciliar sect and its collaborators.