Can I select a international-target group in Webmaster Tools?
I can select in Google Webmaster Tools a country-target group. But what if my site has an international audience? Is there any multi-country-target group in Webmaster Tools for websites with an international audience?
No not now
The problem with having a tool in the Webmaster Tools for targeting several countries is that some webmasters who check every single country claiming that the content on their site is relevant for people around the world. The other reason why the geolocation feature exists in AdWords and not in the webmaster tools is that since AdWords is a paid service, it must offer high-quality resources.