The UN Charter is facing one of its gravest tests in decades, Secretary-General António Guterres told the Security Council on Tuesday, warning that wars, arms races, climate shocks and the erosion of international law are placing intense pressure on the multilateral system established to prevent a third world war.

The Security Council is meeting for a high-level debate on strengthening the UN-centred international system amid mounting pressure on multilateralism and deepening geopolitical…

The UN Charter is facing one of its gravest tests in decades, Secretary-General António Guterres told the Security Council on Tuesday, warning that wars, arms races, climate…