A man walks past a destroyed rail bridge which fell over a main road leading to the eastern Ukrainian city of Donetsk. Reuters

The Real Ukraine Crisis Is Coming: The "Day After" Dilemma -- Paul J. Saunders, National Interest

Get ready, Europe: When peace comes to Ukraine, the ultimate challenge will begin...

As NATO’s Wales Summit approaches—and Russia’s support for Ukrainian separatists grows—the Obama administration and U.S. allies face increasing pressure to act. Most attractive are the simple-sounding solutions, like additional sanctions against Russia or military assistance to Ukraine. Unfortunately, commendable and appropriate desires to deter Moscow and help Kyiv in the short-term are obscuring some unfortunate realities and some painful lessons from other civil wars. The bottom line is that even if Moscow allows Ukraine’s military to defeat the separatists—an outcome that does not seem likely at this point—finding a sustainable solution will be costly and quite difficult.

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My Comment: Could not have said it any better.