Reporters sans Frontières (RSF) has called on Afghanistan President Hamid Karzai to do his utmost to ensure that the killers of the head of Peace Radio, Zakia Zaki, who was regularly threatened by warlords, are tracked down and punished. Two armed men broke into the family home of the head of radio Sada-e-Sulh (Peace Radio) in Jabalussaraj, in the northern province of Parwan, and gunned her down...