Here are recent poll results. Regrettably I have forgotten where I got it from, but I think it was PEW research.
These polls fluctuate a lot and tend to improve during tense situations when our "allies" think we might not be willing to clean up their messes for them gratis. Because they will always be there for us when they need us. Grab an opinion poll during the surge in Iraq.
Note how borderline our ratings are in the UK, in whose behalf we lost 400K men fighting the Germans.