As the echoes from President Trump’s second Syrian missile strike died away, many observers criticized the administration for lacking a coherent strategy. There is more than a little truth to the charge. The drama and disarray of this often-dysfunctional White House does not suggest a Richelieu at work. The presidential Twitter feed has not always been consistent or levelheaded on the topic of the Syrian war, and it is hard to reconcile Mr. Trump’s denunciations of Bashar al-Assad and his warnings about Iranian aggression with his apparent determination to remove U.S. troops from Syria as quickly as possible.
The tangled politics of last week’s missile strikes illustrate the contradictions in Mr. Trump’s approach. The president is a realist who believes that international relations are both highly competitive and zero-sum. If Iran and Russia threaten the balance of power in the Middle East, it is necessary to work with any country in the region that will counter them, irrespective of its human-rights record. The question is not whether there are political prisoners in Egypt; the question is whether Egypt shares U.S. interests when it comes to opposing Iran.
Yet the rationale for the missile strikes was not realist but humanitarian and legalistic: Syria’s illegal use of chemical weapons against its own people demanded or at least justified the Western attacks. For any kind of activist Middle East policy, Mr. Trump needs allies—including neoconservatives and liberal internationalists at home and foreign allies like Britain and France abroad—and the realpolitik approach he wishes to pursue would alienate them.