Reiterates its call upon the United Nations system, including the main organs, their main committees and subsidiary bodies, through forums such as the high-level political forum on sustainable development and functions such as the annual ministerial review and the Development Cooperation Forum of the Economic and Social Council and the funds and programmes and the specialized agencies, to increase efforts to fully mainstream a gender perspective into all issues under their consideration and within their mandates, as well as into all United Nations summits, conferences and special sessions and their follow-up processes, including those of the United Nations Conference on Sustainable Development, held in 2012, the third International Conference on Small Island Developing States, held in 2014, the Third United Nations World Conference on Disaster Risk Reduction, the third International Conference on Financing for Development, the United Nations summit for the adoption of the post-2015 development agenda and the twenty-first session of the Conference of the Parties to the United Nations Framework Convention on Climate Change, held in 2015, and the high-level plenary meeting on addressing large movements of refugees and migrants and the United Nations Conference on Housing and Sustainable Urban Development (Habitat III), held in 2016;