Religion

The White House still avoids the label, but by any reasonable historical standard, the Iraqi civil war has begun. The record of past such wars suggests that Washington cannot stop this one -- and that Iraqis will be able to reach a power-sharing deal only after much more fighting, if then. The United States can help bring about a settlement eventually by balancing Iraqi factions from afar, but there is little it can do to avert bloodshed now.

Religion has always been a major force in U.S. politics, but the recent surge in the number and the power of evangelicals is recasting the country's political scene -- with dramatic implications for foreign policy. This should not be cause for panic: evangelicals are passionately devoted to justice and improving the world, and eager to reach out across sectarian lines.

By toppling Saddam Hussein, the Bush administration has liberated and empowered Iraq's Shiite majority and has helped launch a broad Shiite revival that will upset the sectarian balance in Iraq and the Middle East for years to come. This development is rattling some Sunni Arab governments, but for Washington, it could be a chance to build bridges with the region's Shiites, especially in Iran.