Every investor loves to say, "I don't care about politics. I just follow the numbers." That's a fantasy. Politics moves markets. If you're not paying attention to what's happening in Washington, Brussels, or Beijing, you're driving with your eyes closed.But here's the trap. Obsessing over every headline, every poll, and every political hottake will ruin you. Traders who jump at every new development get chopped up.Whips by sentiment instead of capturing the real opportunity. Savvy investors do it differentl ...