US President Donald Trump has withdrawn the US from dozens of international organisations, including many that work to combat climate change, BBC reported. 

Among the 66 groups, nearly half of them are bodies of the United Nations, including the UN Framework Convention on Climate Change - a treaty that underpins all international efforts to combat global warming.

The White House said the decision was taken because those entities "no longer serve American interests" and promote "ineffective or hostile agendas".