In March 2011, Peninsula Shield, the joint emergency military force of the Gulf Cooperation Council (GCC), crossed the causeway from Saudi Arabia into Bahrain to help the ruling al-Khalifa family crush a popular revolt. Two GCC members, Oman and Kuwait, refused to participate in what was effectively a Saudi-led intervention to prop up a fellow monarch. But earlier this week, at the annual GCC summit in Doha, Qatar, the bloc agreed to expand security cooperation—and this time, there were no abstentions. The Doha summit capped a year of reconciliation among the oil and gas-rich Arab Gulf kingdoms, mainly involving Qatar […]