 European defence spending, about European capability to defend peace and security on their own continent. But he said, ultimately, if you have someone in the White House who's determined to undermine the alliance, there's little that other NATO allies can do about that. NATO comes face to face with US domestic politics. That's the world's Europe correspondent, Orla Barry, with a wrap up of the NATO summit in Washington this week. Orla, thanks very much. You're welcome, Marco.