Developing nations could have a greater say over global tax rules after winning a diplomatic tussle at the United Nations in New York on Wednesday. A new resolution, agreed by UN members, gives the body a mandate to kickstart intergovernmental talks on tax. The policy area has long been dominated by the Paris-headquartered Organisation for Economic Co-operation and Development (OECD), a body largely formed of wealthy countries including the US, UK and Japan. The resolution, presented by the African Group, ultimately paves the way for a UN convention on taxation and a new global tax body, according to campaigners.