My guess is Arabic.
I'm thinking Belgian http://www.flickr.com/photos/appaloosa/24383201/
These are some of my favorite peace pole references
http://www.msuu.org/index.php?option=com_content&view=article&id=64:peacepole&catid=37:calcomm&Itemid=130
also
http://nedv.net/village/peace/inanylanguage.php
The problem with the second is that it doesn't tell what language it is, inless its one that doesn't have a 'font', and they uploaded a GIF, which got named by the language.