Thirteen, Richard K. Morgan

"See once upon a time, " Yavuz was saying, "fear was a unifying force. Back then,  you could make a country string with xenophobia. That's the old model, the nation-state fortress thing. But you can't live in a fortress when your whole way of life depends on globalized interdependance and trade. Once that happens, xenophobic tendency becomes a handicap, in Groombridge's terms a non-adaptive trait.'

p. 248