While The U.S. has been buying almost no Gold, coutries like China, Russia and India have been adding hundreds of Tonnes. Over the Past 4 years you can see from the Graph that Russia has just about doubled their gold holdings in the past 4 years. These countries know that the U.S. Dollar's days are numbered and plan to have plenty of real money when the world's reserve currency finally goes the way of every other fiat (paper money) throughout history.
From Ed Steer's daily research (Casey Research)