France's Defence Minister Jean-Yves le Drian says the conflict-torn Central African Republic must not be allowed to split.\n\nHe was speaking on his latest visit to the former French colony.\n\nRising religious violence there has prompted UN Secretary General Ban Ki-moon to warn that de facto 'partition' between Muslims and Christians is a real risk.\n\nChristian militias formed after abuses by mainly Muslim Seleka rebels