You might well be right about that Doug - or it might have been intendeed as ambiguous. But I would imagine that for most Americans "us" and "US" would mean much the same anyway.
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As for Dave's assertion about how no one is celebrating and rejoicing at this death, well, that certainly doesn't square with the way it's been covered in some of the British tabloid papers.

There really isn't that much difference between the way people respond to violent death in different parts of the world. Even when it comes to suicide bombings and such - there've been any number of war films with people choosing to die so as to take more of the enemy with them, and this being seen as heroic and admirable.