(REUTERS) A gunman disguised as a tourist opened fire at a Tunisian hotel on Friday with a weapon he had hidden in an umbrella, killing 28 people, including British, German and Belgian tourists, as they lounged at the beach and pool in a popular resort town. Terrified tourists ran for cover after the gunfire and an explosion erupted the Imperial Marhaba in Sousse resort town, 140 km south of the capital Tunis, before police shot […]