It is commonly believed in the United States that the country has no Grand Strategy since the end of the Cold War.
A Grand Strategy is a vision of the world that one seeks to impose, and that all administrations must respect. So, even if you lose in one particular theatre of war, the fight continues in others, and finally ends in triumph. At the end of the Second World War, Washington chose to follow the directives set by ambassador George Keenan in his famous diplomatic telegramme. It proposed describing an alleged Soviet expansionism in order to justify containment of the USSR. Indeed, although the USA had lost the wars in Korea and Vietnam, it finished by prevailing.
It is very rare to be able to rethink a Grand Strategy, even if there were others during that period, in particular, with Charles De Gaulle in France.
Over the last eighteen years, Washington has been able to progressively set new objectives and new tactics with which to attain them.
1991-2001: a period of uncertainty
When the Soviet Union collapsed on 25 December 1991, Father Bush's USA supposed that they no longer had any rivals. The victorious President by default demobilised 1 million soldiers and imagined a world of peace and prosperity. He liberalised the transfer of capitals so that the capitalists would be able to get richer and, he believed, thus enrich their fellow citizens.