Rich nations must stop threatening to withhold aid as a way to dictate policies to Africans, Ugandan President Yoweri Museveni said on Wednesday. Donors who fund about half Uganda's budget have threatened cuts over delays in the east African country's return to multi-party politics, and a plan to remove presidential term limits that critics say is aimed at keeping Museveni in power. But such attitudes are immoral, paternalistic and partly to blame for the economic stagnation of much of the continent, Museveni told an African investment conference staged by the Organisation for Economic Co-operation and Development (OECD).