The content originally appeared on: CNN A version of this story first appeared in CNN's Meanwhile in the Middle East newsletter, a three-times-a-week look inside the region's biggest stories. Sign up here. Abu Dhabi and London (CNN)It took just 24 hours for Iraq's most powerful man to showcase his might on the streets of Baghdad on Monday, in what turned out to be one of the capital's most violent episodes in years. Muqtada al-Sadr, a fiery cleric who counts both […]