A multilateral approach means working together with multiple countries or parties to solve a problem or achieve a goal. It involves cooperation and collaboration among several sides instead of just one country or entity. Full definition
Regarding HFCs, the United States and China agreed to work together and with other countries through multilateral approaches that include using the expertise and institutions of the Montreal Protocol to phase down the production and consumption of HFCs, while continuing to include HFCs within the scope of UNFCCC and its Kyoto Protocol provisions for accounting and reporting of emissions. (dotearth.blogs.nytimes.com)
We have stated our concerns about the current administration's rejection of multilateral approaches to trade issues. (cumber.com)
The most promising way to address CBDRRC could be through provisions involving revenues and / or handling of allowances from a global multilateral approach. (climatenetwork.org)