The United Arab Emirates has suspended operations at a key natural gas field in Abu Dhabi following the first direct attack on a producing field in the UAE as Iran escalates its drone-strike war against energy assets in the Gulf. “Abu Dhabi authorities and relevant response teams have contained and brought under control a fire that broke out at Shah gas field, caused by a drone attack,” the Abu Dhabi Media Office said early on Tuesday. “Operations at the facility have been suspended while damage is assessed,…