It’s time to think like a contrarian, warns ConvergEX’s Nick Colas. Why? Because capital markets seem as bulletproof as one of those up-armored military personnel carriers you see in war zones. So what could really rattle stock, bond and commodity markets over the next 3-6 months? The go-to answer, steeped in history, is geopolitical crisis, where the logical hedges are precious metals, volatility plays, and possibly crude oil. Look deeper, however, and other answers emerge.