Financial Times: SHigh quality global journalism requires investment. Please share this article with others using the link below, do not cut & paste the article. See our Ts&Cs and Copyright Policy for more detail. Email ftsales.support@ft.com to buy additional rights. http://www.ft.com/cms/s/0/f5c6b73e-0390-11e5-a70f-00144feabdc0.html#ixzz3bhUTP2wS hortly before Nelson Mandela passed away, I had a chance to ask FW de Klerk, his predecessor as South African president, what impact the anti-apartheid divestment campaign...