'It was a violent entry into the minds of the people of the world but what is important to us is that it was an entry' - a Palestinian guerrilla talks to Man Alive about the dramatic multiple hijacking in 1970 he helped to mastermind. The programme traces the origins of the apparently illogical acts of violence, the skyjackings and the political kidnappings. Jeanne La Chard talks to some of the men and women behind them, including Leila Khaled, who gives her first ever television interview to the West, and to men like Chancellor Kreisky of Austria and General Dayan of Israel who have had to make the agonising choice between whether to sacrifice hostages or give in to blackmail.