sector is controversial and has been criticized by developing countries.

U.S. President Obama committed the US to contributing US$3 billion to the fund. In January 2017, in his final three days in office, Obama initiated the transfer of a second $500m installment to the fund, leaving $2 billion owing. Former U.S. President Donald Trump in his announcement of U.S. withdrawal from the Paris Agreement on 1 June 2017, also criticized