Khalidi is a professor of Philosophy at York University in Toronto, and has worked on philosophical aspects of the question of Palestine, including refugee rights, the right of political self-determination, and the ethics of war. He also works in the philosophy mind and cognition, including the influence of language on thought. He serves on the Insitute's Board of Trustees and is a member of the Research Committee. He was also the inaugural guest of Palestine Studies TV, where he discussed his article, "The Most Moral Army in the World"? The New "Ethical Code" of the Israeli Military and the War on Gaza.