this enduring preoccupation with power and security explains why many Asians and Europeans are now eager to preserve – and possibly expand – the U.S. military presence in their regions. As Czech president Vaclav Havel has warned, if NATO fails to expand, “we might be heading for a new global catastrophe...[which] could cost us all much more than the two world wars.” These are not the words of a man who believes that great power rivalry has been banished forever.