This includes a $100 billion plan to drive more climate and development investment using currency guarantees from the IMF and other multilateral development banks (MDBs) - one idea among many to boost funding for developing nations. Mottley's special envoy Avinash Persaud said dealing with debt was going to "play a big role" in developing countries' response to climate change, citing a World Bank estimate that these nations require $2.4 trillion annually for the next seven years to address costs from climate change, conflict and pandemics.