“The year 2015 was filled with violence and bloodshed in the Middle East. The New Year does not promise much better. On 2 January, the Kingdom of Saudi Arabia executed at least 47 people in a single day. Even for a place like Saudi Arabia — where, unlike most other places in the world, executions have been increasing — 47 executions in one day is extraordinary.”
There is good information about the differences between Muslim ideologies as well.