The sharp decline in world oil prices during the last half of this year has become the defining economic event of 2014. It has been hailed as a timely stimulus to global demand because it adds to the purchasing power of consumers. Lower gas prices have already strengthened the U.S. expansion and supported the still-fragile recoveries in much of Europe, Japan and the emerging economies. These demand side effects are still growing, but they are only the most immediate impacts. Depending on how the tumultuous events in the oil market play out, they will have important effects through many other channels, and not all ... (full story)