In this issue: 1. Kigali Amendment latest ratifications 2. Summary of the 35th Meeting of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer (MOP35), 22–27 October 2023 3. The Montreal Protocol: multilateralism done right 4. Montreal Protocol delegates replenish the Multilateral Fund and address emerging challenges 5. Nationally Determined Contributions (NDC) Help¬desk for the Cooling Sector 6. Researchers Develop ‘Cost-Effective’ Ultrasonic Leak Detection System for Flammable Refrigerants in Smaller Equipment 7. Cooling and health experts join forces for African sustainable vaccine network 8. Vietnam strives to cut use of chemicals harmful to ozone layer 9. Delegación de Perú viaja a Colombia para fortalecer sus capacidades institucionales 10. Management of Certain Hydrofluorocarbons and Substitutes under Subsection (h) of the American Innovation and Manufacturing Act 11. New rules to tackle “refillable” cylinder loophole