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I studied for my B.A. and later for my PhD (direct track, summa cum laude) at Bar-Ilan University under the supervision of David Heyd and the late Eliezer Goldman. I taught at Bar Ilan from 1983 to 2001 and then moved to the University of Haifa where I have been teaching ever since. As of the academic year 2017-2018 I serve as the head of department. My areas of specialization are ethics, political and legal philosophy, and Jewish philosophy.
In recent years, I have been working mainly in two areas. The first is the ethics of war. Several years ago, I came to realize that if any theoretical framework might justify the wholesale killing in war, it is a contractarian one. I'm currently completing a book on this topic with Yitzhak Benbaji from Tel Aviv Law School entitled War by Agreement. We hope it is published in early 2019. 
My second area of interest has been the relation between state and religion. In 2014 I published, together with Gidi Sapir from Bar-Ilan Law School, a book that offers a systematic analysis of the role of religion in liberal states, with particular emphasis on the Israeli experience (University of Haifa Press, 2014, in Hebrew). An English version came out in early 2019 by Cambridge University Press.

In addition, I am a member of the advisory board of The Center for Ethics at Mishkenot Sha'ananim, andfrom 2016 the chair of theIsraeli Philosophical Association.
I am also a co-founder and academic advisor of the "Min Habe'erot" ["from the wells"] program under the Shaom Hartman Institute. The program brings together Jewish and Arab educators to address issues related to their shared background as citizens of the State of Israel through the study of common values based on traditional Muslim, Christian, and Jewish texts.