Claim: Yossi Yona began studying for a PhD and went on to become a Professor of philosophy of education at Ben-Gurion University before he joined the Left Camp of Israel party.
Evidence: After graduating in 1979, he began studying for a PhD, graduating from the University of Pennsylvania in Philadelphia. He went on to become a Professor of philosophy of education at Ben-Gurion University, and a senior research fellow at the Van Leer Jerusalem Institute. Whilst at university he joined the Left Camp of Israel party.