Give Stephen M. Walt his due. After Prime Minister Benjamin Netanyahu's tense visit to Washington last month, a cowardly U.S. government official lobbed an "Israel vs. America" dual loyalty canard at my former colleague, National Security Council advisor Dennis Ross. But while he or she hid behind a cloak of journalistic anonymity shamelessly provided by Politico's Laura Rozen, Walt at least has the gumption to stand up and make his McCarthyite case in his own name. And while Rozen's muse only attacked one person's bona fides, Walt pilloried the professional credentials of several dozen of our nation's leading Middle East experts.

For the record, Ross, who was a distinguished fellow at the Washington Institute for Near East Policy (WINEP) throughout George W. Bush's administration, has been advancing U.S. interests in peace and security for the past quarter-century. He is now working at a senior level for his fourth president -- two Democrats, two Republicans -- and has the battle scars that come with his membership in the increasingly narrow circle of bipartisan foreign-policy practitioners. Our nation could use fewer Walts and a lot more Rosses.

Of course, "McCarthyite" is a term one should be reluctant to throw around, but I can think of no more accurate word for fact-free accusations designed to smear reputations with an appeal to patriotism. What else is one to make of Walt's rhetorical question: "Isn't it obvious that U.S. policy towards the Middle East is likely to be skewed when former employees of WINEP or AIPAC have important policy-making roles, and when their own prior conduct has made it clear that they have a strong attachment to one particular country in the region?"

I cannot speak for other organizations, but I can speak for current and former employees of The Washington Institute. What "prior conduct" is he talking about? To which country do we allegedly have a "strong attachment"?

Our foreign-born scholars hail from virtually every country in the Middle East -- Turkey, Iran, Israel, and at least a dozen different Arab countries. It is true that some have strong attachments to their native lands. One went on to serve as senior aide to the Jordanian foreign minister, another is now an advisor to the French Foreign Ministry, and a third is currently a Lebanese diplomat. Our first Arab resident scholar was Saad Eddin Ibrahim, an Egyptian patriot if there ever was one. But I think Walt had something else in mind.

As for U.S. citizens on our staff, their suspicious "prior conduct" includes 35 years in the Defense Intelligence Agency (Jeffrey White), 30 years at the State Department and the old U.S. Information Agency (David Pollock), and tours of duty at the State Department, the FBI and the Treasury Department, the Pentagon, and the National Defense University (Scott Carpenter, Matthew Levitt, David Schenker, and Patrick Clawson, respectively). And then there are the dozen U.S. Air Force officers who have each spent nearly a year as national defense fellows, as well as the Foreign Service officers and Defense Intelligence Agency analysts who have been on loan to us from their home agencies. By Walt's arguments, all these public servants should be precluded from high office. But still, I think Walt had something else in mind.

And to which Middle Eastern country does Walt believe that I, director of WINEP for the past 17 years, have a "strong attachment?" Is it Jordan, where I studied at a university in Yarmouk and about which I have written two books and my Oxford dissertation? Or perhaps Morocco, where I lived with my family for more than two years and where I wrote two other books? No, it seems Walt had something more nefarious in mind.