‘Climate is our biggest war’, warns CEO of Cop30 ahead of UN summit in Brazil

June 29, 2025

The Guardian

Negotiators doubt countries’ financial and environmental commitment as military and trade wars divert attention

Fiona Harvey Environment editor

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“Climate is our biggest war. Climate is here for the next 100 years. We need to focus and … not allow those [other] wars to take our attention away from the bigger fight that we need to have.”

Ana Toni, the chief executive of Cop30, the UN climate summit to be held in Brazil this November, is worried. With only four months before the crucial global summit, the world’s response to the climate crisis is in limbo.

Ana Toni at the Cop29 talks in Azerbaijan last year.  Photograph: Rafiq Maqbool/AP