The war in Georgia is a victory for Russia. The West’s options are limited, but it needs to pursue them firmly.

ON THE night of August 7th, Mikheil Saakashvili, Georgia’s president, embarked on an ill-judged assault on South Ossetia, one of his country’s two breakaway enclaves. Russian tanks, troops and aircraft poured across the border. Just five days later, after pulverising the Georgian armed forces, Russia announced that it...