BBC NEWS | Protests spread over sky marshals

"More countries have joined the protests against American proposals to place armed guards on US-bound flights.

Portugal is the latest nation to voice concern, as its civil aviation authority said that putting loaded guns aboard an aircraft could endanger it.
In Britain, the pilots' union said that if the security risk to a flight is great enough to warrant an armed guard, the plane should not fly at all.

Denmark and Sweden have also rejected demands for armed guards on aircraft. "

For once, it's not France who is protesting an extra-territorial US policy. I guess that it's a case of "choose your battles wisely".