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- At the beginning of 2021, newly elected US president Joe Biden re-joined the Paris agreement.
- In November 2020, the European External Action Service, together with the EU Commission and the European Defence Agency, presented a “Climate change and Defence roadmap”, approved by the EU Commission in January 2021. It confirms the determination of the EU to be a role model and an involved partner to face this crucial issue.
- In June 2021, NATO adopted a Climate change and security action plan during its summit in Brussels.
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