While some progress on European sovereign debt problems may have slowed or halted the decline of the euro for now, uncertainty on a fundamental level predominates in currency markets, leaving traders and technical factors in control and possibly less volatility in the outlook. The dollar recently has seen some signs of strengthening while the yen has resumed weakening as central banks in the United States and Japan have taken different tacks on quantitative easing and currency traders and analysts are looking for more of those trends in the coming year.