Explained very clearly here by jsnip4, a 'Joe six pack' who has just been following this repetitive scenario for years:
Ever wondered why Nigeria, of all places, has its very own terrorist organisation, called 'Boko Harem', or something equally ridiculous and foreign-sounding! Couldn't be because they have oil, could it?
Here's another great interview jsnip4 gave recently, where he explains a little more about current events:
Only point where I might disagree with him is whether the BRICS are with or apart from 'the Club', but at this stage, it hardly matters anymore!