The EU responded by feebly attempting to counter this worrisome imbalance of influence with a Common Foreign and Security Policy and a rapid deployment force. Still, NATO's chances of replacing the EU as the main continental political alliance are much higher than the EU's chances of substituting for NATO as the pre-eminent European military pact. the EU is hobbled by minuscule and decreasing defense spending by its mostly pacifistic members and by the backwardness of their armed forces. That NATO, under America's thumb, and the vaguely anti-American EU are at cross-purposes emerged during the recent spat over the International Criminal Court. Countries, such as Romania, were asked to choose between NATO's position - immunity for American soldiers on international peacekeeping missions - and the EU's (no such thing). Finally - and typically - the EU backed down. But it was a close call and it cast in sharp relief the tensions inside the Atlantic partnership. As far as the sole superpower is concerned, the strategic importance of western Europe has waned together with the threat posed by a dilapidated Russia. Both south Europe and its northern regions are emerging as pivotal. Airbases in Bulgaria are more useful in the fight against Iraq than airbases in Germany. The affairs of Bosnia - with its al-Qaida's presence - are more pressing than those of France. Turkey and its borders with central Asia and the middle east is of far more concern to the USA than disintegrating Belgium. Russia, a potentially newfound ally, is more mission-critical than grumpy Germany. Thus, enlargement would serve to enhance the dwindling strategic relevance of the EU and heal some of the multiple rifts with the USA - on trade, international affairs (e.g., Israel), defense policy, and international law. But this is not the only benefit the EU would derive from its embrace of the former lands of communism. Faced with an inexorably ageing populace and an unsustainable system of social welfare and retirement benefits, the EU is in dire need of young immigrants. According to the United Nations Population Division, the EU would need to import 1.6 million migrant workers annually to maintain its current level of working age population. But it would need to absorb almost 14 million new, working age, immigrants per year just to preserve a stable ratio of workers to pensioners. Eastern Europe - and especially central Europe - is the EU's natural reservoir of migrant labor. It is ironic that xenophobic and anti-immigration parties hold the balance of power in a continent so dependent on immigration for the survival of its way of life and institutions. The internal, common, market of the EU has matured. Its growth rate has leveled off and it has developed a mild case of deflation. In previous centuries, Europe exported its excess labor and surplus capacity to its colonies - an economic system known as "mercantilism".