Don't overestimate them. I don't believe MS or US government would give access to source code to anybody with "alternative" world insight. It's like to give access to source code to N. Korea.
An agreement signed in 2002 gave Russia access to the source code for Windows XP, 2000 and Server 2000. Under the latest agreement, Russia will gain access to the source code for Windows 7, Server 2008 R2, SQL Server and Office 2010.
http://www.computerweekly.com/news/1280093257/Microsoft-shar...
It's part of Microsoft's Shared Source Initiative
http://www.microsoft.com/en-us/sharedsource/default.aspx
All governmental requests (whether from local, state, provincial, or national governments or agencies) for access to Microsoft product source code must be directed to the Government Security Program Team. They can be contacted at gspteam@microsoft.com
http://www.microsoft.com/en-us/sharedsource/government-secur...