that is the historical question. >> there are real echos of what happened before world war i, right, the great power jockeying, the rise of nationalism, populism, isolation nlism. >> 100%. you had in the world after napoleon at the risk of sounding like meacham here. >> god forbid. >> welcome aboard. >> you had the rise of napoleon -- >> the water is fine, richard. >> essentially the world stabilized in the second century -- second decade of the 19th century. then for roughly 50, 75, 100 years you had what was called a concert of europe, the countries of europe worked things out. it broke down in the years running up to world war i and that's, again, the question we have now. we have had 75 years of a managed international environment. are we beginning to see it break down? if so, history suggests it won't be pretty or, again, is this simply a temporary speed bump and then people get scared by