Visit us at Network2020.org. For nearly eighty years, Europe's security has rested on a single assumption: that the Americans would be there. In early March, days into the war with Iran, and weeks after Washington threatened to take Greenland from a NATO ally, we sat down with Jeremy Shapiro to ask whether that assumption still holds, and what Europe does if it doesn't. Since this conversation was recorded, the Pentagon has ordered thousands of American troops out of Germany, canceled an armo...