The dollar’s near-5 percent rally against a basket of currencies in the space of just three weeks has brought it up against some critical technical levels, which could give fresh legs to the greenback if successfully broken. The initial catalyst was the realization that some of the world’s biggest central banks, notably the European Central Bank, would not in the near-term follow the example of the U.S. Federal Reserve in raising interest rates from crisis-era lows. But there are other factors too. From the widening interest rate differential in favor of the United States to investors’ need to unwind some of the ... (full story)