In this London Times op-ed, the leaders of eight european countries (including, surprisingly, Vaclav Havel of the Czech Republic and Anders Rasmussen of Denmark) come out strongly in favor of supporting the US in its bid to make Iraq disarm.
Interestingly, they argue that the challenge to Iraq should be supported first to preserve cohesion between the United States and Europe, and secondarily, because it's the right thing to do.