Bing Webmaster Tools now supports languages that go from right-to-left, like Arabic and Hebrew. Fabrice Cabal from Microsoft Bing wrote on Twitter, "If you didn't notice yet, Bing Webmaster Tools is now also available in Right-To-Left languages as Arabic and Hebrew."
Yes, Arabic and Hebrew is written and read from the right side of the page to the left, as opposed to left-to-right.
Here is a screen shot of the setting in Bing Webmaster Tools after you click on the settings gear icon:
Forum discussion at Twitter.