Without naming them by name, but clearly aimed at NATO and the EU, Pope Leo attacked the rearmament frenzy that goes “far beyond the principle of legitimate defense.”
In his speech for World Peace Day 2026, which has already been published on the website of the Holy See, the Pope says: “When peace is not a reality that is lived, cultivated and protected, then aggression spreads into domestic and public life. In the relations between citizens and rulers, it could even be considered a fault not to be sufficiently prepared for war, not to react to attacks, and not to return violence for violence. Far beyond the principle of legitimate defense, such confrontational logic now dominates global politics, deepening instability and unpredictability day by day. It is no coincidence that repeated calls to increase military spending, and the choices that follow, are presented by many government leaders as a justified response to external threats. The idea of the deterrent power of military might, especially nuclear deterrence, is based on the irrationality of relations between nations, built not on law, justice and trust, but on fear and domination by force. “Consequently,” as Saint John XXIII had already written in his day, ‘people are living in the grip of constant fear. They are afraid that at any moment the impending storm may break upon them with horrific violence. And they have good reasons for their fear, for there is certainly no lack of such weapons. While it is difficult to believe that anyone would dare to assume responsibility for initiating the appalling slaughter and destruction that war would bring in its wake, there is no denying that the conflagration could be started by some chance and unforeseen circumstance.'