Through Resolution 2/21, the United Nations Environment Assembly, among other things, requests the Executive Director to, within the programme of work and available resources, support Member States, in collaboration with relevant United Nations entities and other partners, in addressing the challenges of sand and dust storms through the identification of relevant data and information gaps, policy measures and actions, building on the “Global assessment of sand and dust storms” under General Assembly resolution 70/195 of 22 December 2015, and in connection with the ongoing efforts on air quality monitoring and assessment in response to United Nations Environment Assembly resolution 1/7.