CANADA The Canadian Security Intelligence Service has close U.S. ties (its intercept helped trigger last week's terrorism warning). But Canada's open-immigration policy has led some to suggest the place is a haven for al-Qaeda sympathizers who then cross the U.S. border
BRITAIN Not everyone is James Bond, but MI5 (domestic) and MI6 (foreign) are very good at human intelligence, notably in Britain's former Middle East colonies. Fighting Irish terrorists has helped agents become adept at tracking other terrorist cells within Britain
FRANCE French-U.S. relations have been prickly in the past, but are warming. Low tech by U.S. standards, the French rely...