@MarketRebellion's Marc LoPresti says today's focus will be set fully on the evolving war in the Middle East. As crude oil spikes and volatility ramps, he says clarity on next steps in the conflict will be essential to calming markets. As for the U.S. economy, he sees a "silver lining" in the FOMC's view on interest rates. Marc also tells investors to watch for retail earnings, from Target (TGT) and Best Buy (BBY) to Abercrombie & Fitch (ANF).