The friendly contours of the post–Cold War system have given way to a darker and more challenging environment.
Iran’s hard-liners are newly emboldened by the urge to secure Syria.
Thus far, he has focused too much on the sticks and too little on speaking softly.
The Gulf dispute could lead to food price increases, which would vastly intensify social unrest.
The United States can achieve denuclearization through stages.
Responding quickly to modern war requires agile and rapid decisionmaking.
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