Robert S. Leiken has been a Senior Fellow at Harvard's Center for International Affairs, the Carnegie Endowment, CSIS, and the Brookings Institution and director of the Immigration Program at The Center for the National Interest. His commentaries have appeared in many major U.S newspapers; his essays in Foreign Affairs, Foreign Policy, The New York Review of Books, The New Republic, The National Interest, The Weekly Standard and The Times Literary Supplement. He has authored books on immigration, Central America, and Soviet strategy. He is presently writing a memoir.

"[Leiken] writes with eloquence, bringing to life the grim realities of the French banlieues and of the back-to-back houses of immigrant families in Leeds."-The Economist

"Leiken provides a historical, ethnic and socioeconomic context that identifies important differences as opposed to empty generalities. Both well written and researched-a valuable contribution to an ongoing discussion." - Kirkus Reviews (starred review)

"[Leiken] is a wide-ranging, freethinking scholar... who lets his conclusions fall where they may, apparently without regard to intellectual trendiness or easily labeled political ideology."-Christian Science Monitor

"To call it a 'popular account' would capture how good a read the book is, but would scarcely capture the depth of the research he brings to bear on these questions." -John R. Bowen, author of Why the French Don't Like Headscarves: Islam, the State, and Public Space