The Long Retreat - HUMAN EVENTS

"America's relative decline since 2000 of some 30 percent represents a far greater loss of relative power in a shorter time than any power shift among European great powers roughly from the end of the Napoleonic Wars to World War II. It is one of the largest relative declines in modern history. Indeed, in size, it is clearly surpassed by only one other great-power decline, the unprecedented internal collapse of the Soviet Union in 1991."