A car bomb in Qamlishi killed Isa Huso, a founder of the Kurdish PYD; Kurdish YPG fighters, who have been battling Islamists in northern Syria for weeks, issued a call to arms against the Islamic State of Iraq and the Levant, the Al Nusrah Front, and allied groups. An Italian priest who traveled to Raqqah to talk with the ISIL about releasing hostages has disappeared, raising fears he has been kidnapped. The Arab League and the Organization of Islamic Cooperation appealed for a ceasefire during next week’s feast of Eid al-Fitr.