His research interests include inter-ethnic relations; religion and the secular in modern life; Islam in the West; the interplay between colonial regimes and anti-colonial politics; and national and sub-national identity. Katz has written widely on these issues, and has lectured extensively in the U.S., France and Israel. The 10-year anniversary of 9/11 provides an opportunity to reflect on the way that this event in many ways has utterly transformed both domestic and international politics for the United States. UC Assistant Professor Ethan Katz