Admiral General Aladeen premieres 'The Dictator' in London - pictures
Appearing in character as the Wadiyan tyrant, Cohen was flanked by female guards as he made his way to the Southbank Centre's Royal Festival Hall.
The movie sees Aladeen embark on a quest to prevent his home country Wadiya from becoming a democracy. Anna Faris, Sir Ben Kingsley, Megan Fox and John C Reilly are among the supporting cast for the film.
The Dictator opens in cinemas on May 16.
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Photo gallery - The Dictator world premiere: