 He began working as a journalist for the newspaper "Haaretz" in 1950, eventually becoming its political correspondent.In 1981, he was appointed Senior Research Fellow at the Moshe Dayan Center for Middle Eastern and African Studies at Tel Aviv University.Following the publication of his research into the murder of Haim Arlosoroff, 1982, Menachim Begin - first Israeli Prime Minister elected from the Revisionist movement - ordered a Judicial Commission of Enquiry which concluded that Teveth was wrong to suggest the murder might have been carried out by two Revisionists.