Millions of people around the world marched on the eve of the Iraq war. When the war happened anyway, some people said: we marched and the war happened anyway. Therefore, protest doesn't change anything. That was drawing the wrong lesson.
History reveals several pathways to war; but, as the tension between the West and Iran revs up, two seem particularly relevant because of the lessons they offer for those seeking to contain the crisis.
It will come as a shock to most Americans, but no presidential candidate -- nor any candidate, nor any local, state or federal government -- has developed a contingency plan in the event of a protracted oil cut-off.
Iran's oft-stated nuclear ambitions remain the single greatest threat to world peace. But instead of recognizing the Iranian threat for what it is, Europeans continue to focus on blaming themselves for past colonial failures.