Bombers Raise Saudi Stakes With Back-to-Back Suicide Strikes

Militants escalated their campaign against Saudi Arabia’s ruling Al Saud family with three suicide attacks in a single day, in the biggest challenge to the kingdom’s internal security since it crushed an al-Qaeda insurgency a decade ago.

With no claims of responsibility, suspicion has fallen on Islamic State, which has vowed to overthrow Gulf rulers they see as betraying Islam. One of the bombings on Monday, near the Prophet’s Mosque in the holy city of Medina, targeted the heart of the Al Saud family’s legitimacy -- its custodianship of Islam’s two holiest shrines.