That was a bumper sticker Sojourners published at the outset of the Iraq war more than a decade ago. American church leaders had not only opposed the war but offered an alternative: "An Alternative to War for Defeating Saddam Hussein, A Religious Initiative." We not only presented it to Colin Powell's personal council and Tony Blair, but also printed full-page ads in every major British newspaper the day before their Parliamentary debate and vote on the war. The U.K.'s Secretary of State for International Affairs, Clair Short, told me the only real alternative on the table in their Cabinet meetings was "The American church leaders' plan," which, she said, was seriously discussed. U.S. and U.K. leaders showed they were drawn to an alternative plan to war that would remove any weapons of mass destruction that Saddam Hussein might have had (which he did not) and even to ultimately remove him from power but without going to war. Pope John Paul II was also opposed to the potential war. Both the Vatican and the American church leaders warned that the potential costs of a war in Iraq could include increasing the scope and threats of international terrorism. ISIS is that sad prophecy come true; the habit of war prevailed.

I have always believed that any alternative to war must still address the very real problems at hand -- just in a more effective way. To say that "war is not the answer" is not only a moral statement but also is a serious critique of what doesn't work; wars often fail to solve the problems and ultimately make them worse. War has to answer to metrics, just as more peaceful alternatives do. The war in Iraq was a complete failure with enormous human and financial costs; ISIS is now one of the consequences.