Suicide bombings hit three cities in Saudi Arabia within 24 hours—including Medina, striking near the Prophet's Mosque, resting place of Muhammed and Islam's second holiest site. Four security officers were killed in that attack, which came during Maghreb prayers, as Muslims break their fast during the holy month of Ramadan. A suicide blast also struck near the US consulate in the coastal city of Jidda, wounding two security officers. And a suicide bomber blew himself up at a Shi'ite mosque in the eastern city of Qatif, although only the only casualty there was the attacker. There were no immediate claims of responsibility, but the attacks are pretty obviously the work of ISIS. (CNN, BBC News, Al Arabiya, NYT)