Vatican Secretary for Relations with States Cardinal Pietro Parolin has voiced deep concern over the growing acceptance of 'preventive war' amid ongoing global conflicts. In an interview published on March 4, 2026, he warned that if nations claim the right to launch preventive wars based solely on their own standards and without any supranational legal framework, the entire world could face catastrophic consequences.

Parolin described the erosion of international law as 'truly worrying' and criticized the current global tendency to replace the rule of law with the law of force. He argued that the belief in achieving peace only through the destruction of enemies undermines the foundations of international order.

His remarks have brought renewed attention to the debate over the use of force versus adherence to international law in global politics, highlighting the Vatican’s concern about the moral and legal implications of unilateral military actions.