 Akarere ka Sahel - kagizwe nubutaka hafi icya kabiri cyabwo bugwamo imvura nke mu majyepfo yubutayu bwa Sahara - kamaze hafi imyaka 10 ari isibaniro mu ntambara yo kurwanya imitwe yitwaje intwaro igendera ku mahame akazi yidini ya kisilamu. 