JustWarTheory.com is an extensive guide to philosophical studies of warfare, maintained by Mark Rigstad, associate professor of philosophy at Oakland University. It is a treasure trove of links, information and articles on just war theory.

Aziz Sheikh is professor of primary care research and development at the University of Edinburgh, Scotland, and a co-author of the editorial, “Hajj and the Risk of Influenza,” published Dec. 9, 2006, in the British Medical Journal.

Read a Jan. 30, 2011, essay about the political situation in Egypt at “On Faith” by Reza Aslan, a widely cited scholar of religions.

Shiraz A. Malik is executive director of the Islamic Medical Association of North America in Lombard, Ill.

The BBC maintains an ethics guide on war as part of their section on religion and ethics.

Read an April 23, 2006, Seed magazine article about health on the hajj.

See a Dec. 7, 2006, UPI story about the flu warning.

Read “What Does Change Mean in Egypt, for Egyptian Christians?” at EthicsDaily.com, a Jan. 31, 2011, column by Ayman Ibrahim, an Egyptian Christian and a doctoral student at Fuller Theological Seminary

Read a July 23, 2009 article about the warning sent out by health officials concerning Hajj and the swine flu epidemic.