The fourth session of the United Nations Environment Assembly (UNEA 4) took place from 11-15 March 2019 in Nairobi, Kenya, at the UN Offices at Nairobi (UNON), organised on the theme of “Innovative solutions for environmental challenges and sustainable consumption and production.” The Assembly included plenary sessions, leadership dialogues and a multi-stakeholder dialogues. Other events that took place in conjunction with UNEA 4 included:

• Global Major Groups and Stakeholders Forum (7-8 March);
• Science, Policy and Business Forum (9-10 March);
• Sustainable Innovation Expo (10-15 March).

The Open-Ended Committee of Permanent Representatives (OECPR) convened from 4-8 March, with informal consultations on 9-10 March, to negotiate the Ministerial Declaration and resolutions to be adopted by UNEA 4. Negotiations on many of the draft resolutions and decisions continued in the UNEA Committee of the Whole (CoW). During the closing plenary on 15 March, delegates adopted a Ministerial Declaration, 23 resolutions and three decisions, addressing shared and emerging global environmental issues. A number of resolutions were significantly weakened during discussions, and three important resolutions were withdrawn after failing to reach agreement - covering deforestation and agricultural commodity supply chains, geoengineering and its governance, and plastic pollution.