International peacekeeping is in its deepest crisis since the turn of the millennium. By the end of 2025, just under 79,000 military, police and civilian staff were deployed in operations around the world, the lowest since 2000 and a 49 per cent drop from the 2016 peak, according to the Stockholm International Peace Research Institute. The decline is accelerating: last year alone, the number of personnel fell by 17 per cent, the sharpest annual reduction in at least a quarter of a century. Simultaneously, the tally of active missions slipped below 60 — to 58 — for the first time in nine years.

The proximate cause is a cavernous funding shortfall. SIPRI calculates a deficit of $2 billion against a budgeted $5.6 billion for the 2024-25 cycle. Viewed from Washington, the deficit is inseparable from the Trump administration’s decision to withhold contributions to the United Nations, a reversal of long-standing American backing for multilateral peacekeeping. European officials in Brussels view the arrears as political sabotage, but admit that even before the US retreat, enthusiasm for blue helmet missions was waning among Western capitals weary of open-ended commitments in Africa and the Middle East.

The operational consequences are already cascading. “If the situation continues in this way,” said Jaïr van der Lijn, director of SIPRI’s peace operations programme, “we may witness a sharp weakening of multilateral conflict management and almost complete marginalisation of institutions like the UN.” The institute warns that the result will likely be more conflicts and even graver impacts on civilians, as troop-contributing nations and host states abandon norms painstakingly built since the end of the Cold War.

Nowhere is the worry more acute than in Addis Ababa. The African Union’s own peace support missions rely heavily on UN logistical and financial backing; those props are being dismantled just as jihadist insurgencies and political violence intensify from the Sahel to Somalia. In Beijing, by contrast, the collapse of Western-led peacekeeping is viewed less as a tragedy than as an opportunity to present China as a champion of an alternative multilateralism — one premised on security-driven bilateral accords rather than broad mandates with human rights components. Whether such a patchwork can fill the void left by a retreating UN is, for now, an open question. What is certain is that the infrastructure designed to keep conflicts frozen is melting faster than anyone anticipated.