said that he is 99% sure that mossad is behind the assassination of a hamas leader. he has told dubai tv that if it is proved to be mossad, he wants the head of the intelligence agency to be put on the interpol list effectively making him a wanted man. no comment obviously from mossad which has many successes and some failures in the past. capturing the architect of the holocaust undoubtedly one of mossad's greatest achievements. and this man was arrested in argentina in 1960 and brought to israel. he was try and executed in 1962, the only time israel has carried out the death penalty. he was head of that mossad operation. >> if we wanted to kill him, we could kill him. what is he? we wanted to take him to trial. and that is much more difficult. >> reporter: ten years later