The Tenth Parallel North has been described as the "fault line where Islam and Christianity meet and clash." [1] In Africa, the Tenth Parallel passes west to east through Nigeria, Cameroon, the Central African Republic, South Sudan, Sudan and Somalia. Cameroon is the only one of these countries to avoid major ethnic, religious, sectarian or terrorism-related conflict in the last decade.

However, militants are now using Cameroon as a rear base for carrying out attacks in Nigeria and the Central African Republic (CAR). These groups include Boko Haram and Ansaru in northern Cameroon and (CAR) militants, including Slka, in eastern Cameroon. Cameroon is likely to see new security threats spilling over into its territory from its two Tenth Parallel neighbors, as well as increasing pressures on the state from refugee flows into Cameroon from Nigeria and the CAR.
http://www.refworld.org/docid/52e0e6d84.html

Interesting analysis