francis arrived in the central african republic and security personnel are expecting concerns about the state of the country and their ability to keep him safe. cnn's robin kriel reports on what makes this leg of his trip most dangerous. >> reporter: so far in africa. pope francis has taken modest transportation, mingling with the people on the ground and allowing spontaneity to intervene. but this laid-back, low-key approach that made him popular with africans so far is what makes his security nervous for his final stop. in the central african republic. it will be the pope's first visit to an active war zone. fighting between christian and muslim militias killed thousands and displaced close to a million people since violence erupted in 2013. the most recent spike in violence occurred just in september when more than 60 people died. french forces on the ground have