“The world of today is torn asunder by a great dispute,” the Polish author Czesław Miłosz wrote in 1951. On one side lay the east, “under the domination of Moscow,” and on the other the west, encompassing the rest of the globe. “Trampled down by History—that elephant,” Poles found themselves sequestered in the east. Unless, like Miłosz, they had somehow “escaped” to the west, they were doomed to live “behind the iron curtain” in a “hermetically sealed . . . Eastern world.” Thanks partly to Miłosz's influence, this Cold War vision of a bifurcated world has thoroughly shaped scholarship on postwar Poland and the rest of eastern Europe. In recent years, however, it has been increasingly contested. Historians no longer speak of “parting” or “raising” the Iron Curtain but rather see this boundary as “nylon,” “airy,” and “porous.” They have uncovered an array of east-west ties as well as linkages along a different axis, north to south. These works belie the old idea of a “hermetically sealed . . . Eastern world” and also restore agency to its inhabitants. No longer “trampled down by history,” Poles now appear as “global citizens” who could “be part of the larger world and transcend the Cold War divide.” And yet one key way of transcending this divide still remains largely overlooked. While scholars explore points of contact between blocs in a “world . . . torn asunder,” they have been less attentive to the institutions that bound that world together: international organizations.