The General Assembly, among other decisions, requests the Secretary-General to submit to the General Assembly at its seventy-third session in 2018 a technical and evidence-based report that identifies and assesses possible gaps in international environmental law and environment-related instruments with a view to strengthening their implementation; and decides to establish an ad hoc open-ended working group, under the auspices of the General Assembly, to consider the report and discuss possible options to address possible gaps in international environmental law and environment-related instruments, as appropriate, and, if deemed necessary, the scope, parameters and feasibility of an international instrument, with a view to making recommendations, which may include the convening of an intergovernmental conference to adopt an international instrument, to the Assembly during the first half of 2019.