Santos Warns Silence Makes Leaders Complicit
The former Colombian president and Nobel laureate delivered the 24th Nelson Mandela Annual Lecture in Cape Town on the theme "When is silence complicity?"
Updated on Nov. 6, 2026 in International Relations
Former Colombian President Juan Manuel Santos, a Nobel Peace Laureate, delivered the keynote address at the 24th Nelson Mandela Annual Lecture in Cape Town. He warned that silence over threats to global peace risks making world leaders complicit.
Why it matters
Santos argued that international law and the principles of the United Nations Charter are being openly disregarded as instruments of statecraft, and that the International Criminal Court is being directly attacked and intimidated. His remarks frame inaction by governments as a moral choice with consequences for the global order.
The address was delivered as the 24th edition of the annual Nelson Mandela Lecture, a recurring event named for the late South African leader. The remarks did not include quantified figures, and the specific conflicts or cases Santos referenced were not detailed in the source material.
The players
Juan Manuel Santos
Former Colombian president and Nobel Peace Laureate who has played a prominent role in international peace efforts and conflict resolution.
The details
Santos delivered the warning as the keynote speaker, stating that the time to remain silent in the face of injustice has come to an end. The lecture's theme, "When is silence complicity?", framed his argument that failure to speak out over threats to peace carries moral weight for leaders.
Timeline
• November 6, 2026: Santos's lecture warning was published.
Big Picture
Framed within the annual Nelson Mandela Lecture series, Santos's remarks extend the moral argument Mandela long made against tolerating injustice, now applied to the current treatment of international law and the International Criminal Court.
The remarks signal growing pressure on governments to take a public position on attacks against international law and the International Criminal Court. Readers following global diplomacy may see more leaders weighing in on these issues in coming months.
The takeaway
Santos's central claim is that neutrality on threats to international law is not neutral at all. Following how leaders answer his question, "When is silence complicity?", offers a useful lens on current global diplomacy.
Further reading
Explore more on International Relations for the broader context of how governments and institutions respond to threats against global peace.
