The United Nations General Assembly, through its resolution 75/2801 of 24 May 2021, decided to convene an international meeting in Stockholm on 2 and 3 June 2022, to commemorate 50 years since the United Nations Conference on the Human Environment. The General Assembly agreed on the theme of the international meeting “Stockholm+50: a healthy planet for the prosperity of all – our responsibility, our opportunity”, and decided to organize collaborative and multi-stakeholder discussions around the following leadership dialogues: • Leadership dialogue 1: Reflecting on the urgent need for actions to achieve a healthy planet and prosperity of all. • Leadership dialogue 2: Achieving a sustainable and inclusive recovery from the coronavirus pandemic (COVID-19). • Leadership dialogue 3: Accelerating the implementation of the environmental dimension of sustainable development in the context of the decade of action and delivery for sustainable development. These dialogues are expected to contribute to the international meeting by yielding clear and concrete recommendations for action at all levels, including through strengthened cooperation.