Angolan President Jose Eduardo dos Santos tightened his family’s grip on sub-Saharan Africa’s third-biggest economy two years before he has indicated he’ll leave office by naming his billionaire daughter Isabel as chairwoman of the state oil company. The appointment “shows that President dos Santos doesn’t trust anyone else and moreover that he’s looking to have a dynastic succession,” Markus Weimer, an analyst for Horizon Client Access Inc., an energy investment advisory group, said Friday by phone from London. “It’s a very strong indication that Isabel will also be considered a possible leader when he retires in 2018.” The Russian-educated dos Santos, Africa’s second-longest serving president, has said he will quit “active politics” in 2018 after leading the country since 1979. His son Jose Filomeno dos Santos already runs Angola’s $5 billion sovereign wealth fund. Angola ranked 163 out of 167 countries in Transparency International’s 2015 Corruption Perceptions Index and […]