France is considering banning the use of Blackberries by ministers and other key government personnel because they might constitute a "threat to national security." Specifically, because Blackberry messages go through servers based in the United States, the fear is that the U.S. National Security Agency will intercept sensitive French communiques and get access to classified information. According to Le Monde,

“The risks of interception are real […] It is economic war,” Alain Juillet, in charge of economic intelligence for the government, said.

Two points:

• It's true. Blackberries are a threat to French national security. However, so are lepers, monkeys with rocks, any 12 members of the Sailor Moon fan club and the rather impressive turd I shat out last night.
• No country is waging "economic war" on France. For that to happen, France would need to actually have a viable economy worth sabotaging, and French labor unions have seen to it that this isn't the case.