JOHANNESBURG  — Activists say some of the cocoa in your Valentine’s Day chocolate probably came from a West African country where the president is clinging to office.

Wata Nabieu takes the chocolate bar and carefully unwraps the top. She giggles at us watching her and breaks off a piece, giving it a nervous nibble. Then she passes it to her three-year-old daughter, Yema. Wata pulls the gold wrapper back more and bites. She closes her eyes. “Milk… sugar… cocoa?” she murmurs. Her […]