El Erian gives a very brief overview of what to expect in 2013. Perhaps the only paragraph with any value is the one discussing Japan's monetary stance.

http://www.project-syndicate.org/co...ic-performance-in-2013-by-mohamed-a--el-erian

And another brief outlook on BRIC nations for 2013. This link does speculate the Eurozone will depend on Germany which will have significant elections in Autumn 2013 leaving tough decisions to be postponed.