Zimbabwe's President was unscathed Saturday by an explosion at a campaign rally that state media called an attempt to assassinate him, later visiting his two injured vice presidents and declaring the "cowardly act" will not disrupt next month's historic elections. Dramatic footage showed a smiling President Emmerson Mnangagwa walking off the stage and into a crowded tent where the blast occurred seconds later, sending up smoke as people screamed and ran for cover. Officials said Mnangagwa was whisked from the stadium rally to a nearby government building in Bulawayo, a traditional opposition stronghold.