I have finally found the article in the Atlantic on the prospect of an EU-US war. You can read Charles Kupchan’s piece here.
The consequences of the growing rift between the United States and Europe are only just becoming apparent. The two sharply disagree on the Middle East: the EU opposes both America’s steady support of Israel and its insistence on isolating, rather than engaging, Iraq and Iran. Trade disputes are heating up, especially over steel and agriculture. Despite America’s defection from the Kyoto Protocol, the EU moved forward with more than a hundred countries participating, leaving Washington a lonely and, from all appearances, an environmentally irresponsible bystander. Last year EU member states took the lead in voting the United States off two UN commissionspayback for America’s unilateral ways.
Europe will inevitably rise up as America’s principal competitor. Should Washington and Brussels begin to recognize the dangers of the growing gulf between them, they may be able to contain their budding rivalry. Should they fail, however, to prepare for life after Pax Americana, they will ensure that the coming clash of civilizations will be not between the West and the rest but within a West divided against itself.