John Gummer, Chair of the UK's independent Climate Change Committee, says for the government to win international support for climate initiatives, it must "stop worrying people about whether we'll keep our word or not." Gummer pointed to the Northern Ireland Protocol Bill as an example of the UK trying to break its international commitments. He tells Bloomberg's Caroline Hepker and Tom Mackenzie that those who are worried about immigration must recognise how climate change will cause large-scale movements of people. See omnystudio.com/listener) for privacy information.