The principle of equity and CBDR require countries to take on the burden of fighting climate change in proportion to their historical responsibility for causing it.
The Convention provides a stringent version of differentiation, which puts almost all the burden of fighting climate change on developed countries. The Paris Agreement, on the other hand, while being under the Convention, in keeping with the rising flows of emissions from emerging economies puts relatively more onus on countries such as India and China. But, it still maintains a greater set of obligations on developed countries. For example, while developed countries are necessarily required to provide funds for climate change, developing countries can do so voluntarily.