The shooting at the U.S. Holocaust Memorial Museum serves as a stark reminder: Holocaust denial is not a problem simply because some people choose to falsify history. Holocaust denial is a problem because some people want those who committed genocide in the past exonerated - the better for those planning genocide in the present and future.

To his credit, Barack Obama, after speaking to the world's Muslims from Cairo last week, moved on to Buchenwald, site of a Nazi death camp. There, standing with Holocaust survivor and Nobel Laureate, Elie Wiesel, he denounced Holocaust deniers and, with solemnity, declared that the world must never again tolerate genocide, that "we must be ever vigilant about the spread of evil in our own time."

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So the question should be asked: How will the President of the United States, the world's most powerful leader, translate that poignant poetry into effective policy?

Specifically, what will Obama do about the genocide taking place in the Sudanese region of Darfur? And what will he do about the genocidal threats against Israelis being made by Iran's rulers, and by the terrorist groups they sponsor, Hamas and Hezbollah?

Obama's preference is to deal with these matters diplomatically. But regarding Darfur, diplomacy has been tried for years and found wanting. The Darfuri people are black, and they practice a variety of Islam that does not meet with the approval of the militant Islamist Arabs who rule Sudan.

There are 57 nations in the Organization of the Islamic Conference (OIC). They constitute the most powerful block in the United Nations today. And they side with the regime in Khartoum. Russia and China, members of the UN Security Council, have made investments in Sudan's oil fields and sell arms to Sudan's military. Those interests override any humanitarian concerns. As a result of all this, there is no way the UN would authorize strong measures to save the men, women and children of Darfur. Continued...