Russia's War Against Ukraine
OP-ED
Julia Ioffe: The West has cornered Putin – and that’s when he’s most dangerous

A Russian-backed separatist stands next to bodies of Ukrainian crew members of a destroyed tank in the northern outskirts of Donetsk on July 22.
Today is not a good day to be Vladimir Putin. A game that the Russian president was winning so deftly in the spring has turned on him in summer: The Ukrainian military is bearing down on the pro-Russian separatists in east Ukraine, and there's word that it's on the verge of splitting the rebel-held territory in two and that two major rebel leaders have fled.