Poor countries say rich world betraying them over climate pledges on shipping

Proposal that ships pay levy on emissions to fund climate action in poor countries opposed by powerful economiesPoor countries have accused the rich world of “backsliding” and betrayal of their climate commitments, as they desperately tried to keep alive a long-awaited deal to cut carbon from shipping.Nations from 175 countries have gathered in London this week at the International Maritime Organisation (IMO) to hammer out the final details of a deal, more than a decade in the making