replaced the poor quality poster with a better (bigger) one at:
http://hkmdb.com/db/movies/image_detail ... ay_set=eng

according to German Database (It was released in Germany) Names are:

Robert Malcolm as .... Robert Wallace (FBI Agent)
Antonio Cantafora as.... Max
Sal Borgese as.... Jerry (mute "monkey Face")
Jacques Dufilho as.... US Ambassador
Alberto Farnese
Isabella Biagini as.... Ambassador's wife

http://www.imdb.com/title/tt0167840/

Added 3 actors. Now you can add the roles.