Peter Apps, Reuters (USA)
With Western powers increasingly concluding Ukraine has lost Crimea to Russia, the U.S. and its allies face few viable options and serious questions over future relations. In ignoring President Barack Obama's Friday warning to keep out of Ukraine, Russia looks to be precipitating the greatest crisis in Russia-Western relations since at least the fall of the Berlin Wall. How events play out in the next few days could help shape the geopolitical map for years to come.