By Esther Ososanya Director-General of the World Trade Organisation, Dr Ngozi Okonjo-Iweala, has expressed deep condolences to Ghanaian President John Dramani Mahama following the deaths of two cabinet ministers in a fatal helicopter crash. Ghana’s Minister of Defence, Dr Edward Kofi Boamah, and Minister of Environment, Science and Technology, Dr Ibrahim Murtala Muhammad, were among …
