*Ukraine misses major U.S.-led military exercise
*Gazprom faces potential overstretch in its commitments
*Moscow's Ingushetia policy collapses into disarray
*Nazarbayev sacks defense minister amid crackdown on corruption
*Erdogan promotes E.U. reforms to reduce civil-military tensions
**New in the Jamestown blog on Russia and Eurasia (http://www.jamestown.org/blog):
- Gazprom in Negotiations to Change Turkmen Gas Contract