StrategyPage has a summary of terrorism in Mozambique, and the presence of US experts to train the local military.
few Yanks know about their history: all the skilled folks left and the civil war after independence killed a million people (starvation and disease). So the Frelimo communists took over, meaning that they set up an oligarchy to steal everything in sight.
the Muslim uprising here is about the Frelimo oligarchy controlling all the wealth from the new natural gas/oil fields and leaving the locals poor. It is in an area where there are a lot of Muslims, so voila, guess who is willing to help them?
Anyone who noted how this worked out in the rest of Africa realized this was going to make some Mozambique politicians very rich while everyone else remained poor.
That got the northern Moslems receptive to calls for rebellion and that led to Islamic terrorists taking the lead, as they often do in Moslem majority areas. It only took a few years for several small Islamic terror groups to get organized and then agree to merge to form the larger Ansar-al-Sunna group. Starting out with less than a hundred gunmen and even more unarmed supporters, it took about four years of fighting, growth and a few spectacular victories for Ansar-al-Sunna to reach nearly a thousand gunmen. At that point the Moslem rebels decided to become an ISIL (Islamic State in Iraq and the Levant) affiliate called ISCAP (Islamic State Central Africa Province).
