sentences:  In 1989 he established the short-lived Greek Radical Movement, and in 1990, in a political shift, he was elected mayor of Athens with support from the New Democracy party.Assuming office, he appeared voluble as to his pet projects of bold planting of trees throughout Athens to restrain excessive construction and air pollution in the city, along with those of the unification of the archaeological sites in Athens' historical centre and the re-introduction of the tram railway.He died after a stroke on April 1992.