“Medina Bombing is An Assault on Islam Itself”

This is a valuable historical-background explanation, but it’s also important because it’s the voice of a believing Muslim:

http://www.cnn.com/2016/07/04/opinions/medina-attack-opinion-haroon-moghul/index.html

I recommend it to those who want to understand something of the current crisis in the Middle East and the Islamic world.