I may be wrong, but I think Kerry started most of this 'appease Europe' crap in 2003 or so... with the propaganda-line about Gitmo causing terrorist-behavior and Bush43 should be 'tried' in The Hague, etc.
Europe will love us if we close Gitmo.
But nobody asked European Governments... who essentially didn't give a rat's ass if we closed some prison in Cuba or not.