 This is a photograph of quiet power. In the foreground, a hooded and masked Ukrainian opposition fighter dressed against the cold with makeshift club. In the backdrop, the barricades thrown up on Kiev's independent square. For three months, hundreds and thousands of men and women like this camped out on the square, and often theirs seemed a drawn out quixotic quest to oust President Viktor Yanukovych. They didn't seem all that powerful. This photograph telegraphs their deceptive strength, why Yanukovych fled in the middle of the night. It spells out why he decided he couldn't prevail. Today, there's much talk of the threat of Russia invading, but this photograph explains why Vladimir Putin won't. The risk of a long, hard, and ultimately unwinnable fight is too high.