ANKARA   Water should be at the center of climate and finance discussions, South Africa’s president said on Wednesday at the opening of the African Union Water Investment Summit in Cape Town. The summit has four goals, said Cyril Ramaphosa, which are “to endorse a summit declaration that commits us to scale up investments to improve governance and to increase accountability in the water sector.” It also aims to “showcase a pipeline of 80 priority investment projects from 38 countries” and to “