Q. How do I find info on country risk -- political risk, sovereign debt ratings, country credit ratings etc.?

Consult the Economist Intelligence Unit - Click on Risk Briefing or Risk Ratings Review

Also consult Bloomberg. Bloomberg provides current ratings by Standard & Poor's, Moody's and Fitch. 

1. Hit the yellow GOVT key, type TK, then hit GO.
2. Select desired country from the menu, then hit GO.
3. Select desired security from the list. 
4. Type CRPR, then hit GO.
5. The ensuing display shows current ratings (historical ratings may be available).

The Bloomberg terminals are only available in the Humanities and Social Sciences Library on the 3rd floor (Room M3-53B) of the McLennan building. There are also terminals in the Bronfman building reserved to Management students, faculty and staff. 

Also consult: CountryData.com for ratings calculated by The PRS Group. Click on CountryData, then Subscriber Shortcut near the bottom of the page. When In the Variables section for ICRG Risk Ratings select Financial Risk Rating.