The United States blew the best opportunity for peace in several generations. From David Stockman at antiwar.com:
When the Berlin Wall fell in November 1989 and the death of the Soviet Union was confirmed two years later as Boris Yeltsin courageously stood down the red army tanks in front of Moscow’s White House, a dark era in human history came to an end.
As we have seen, the world had descended into what was in effect an unbroken global war, incepting with the mobilization of the armies of old Europe in August 1914. The “77 Years War” is the appropriate name for it.
If you want to count bodies, 150 million were killed by all the depredations which germinated in the Great War, its foolish aftermath at Versailles, and the march of history into the second world war and cold war which followed inexorably thereupon.
To wit, upwards of 8% of the human race was wiped-out during that span. The toll encompassed the madness of trench warfare during 1914-1918; the murderous regimes of Soviet and Nazi totalitarianism that rose from the ashes of the Great War and Versailles; and then the carnage of WWII and all the lesser (unnecessary) wars and invasions of the Cold War including Korea and Vietnam.
So the seminal point cannot be gainsaid. The end of the cold war meant the chance for a new start toward world peace was finally at hand. Yet 27 years later there is still no peace because Imperial Washington confounds it.