Obama goes around the world accusing US of hegemony and apologizing for past mistakes, so what does he do? The same thing
Actually, Obama accused the NeoCon republicans, who controlled US foreign policy during the GW Bush years, as being the force promoting the US as the world hegemon, and he apologized for that.
The cornerstone of the NeoCon foreign policy doctrine is the Wolfowitz Doctrine, which would become the Bush Doctrine.
Simply stated, or overly simplified, The Wolfowitz-NeoCon-Bush doctrine says the US won the cold, was the last remaining super power, and therefore the world hegemon.
NeoCons are idealists. They subscribe to a foreign policy big on humanitarianism and nation building.
NeoCons are unilateralists. They are opposed to multilateralism and say multilateralism is weakness, leading from behind. They say that the world order can exist only as a hierarchy of power with the US at the top and multilateral organizations such as the UN or NATO are a waste of time.
Obama is a Realist and a multilateralist. If you had to use one word to describe his foreign policy, it would be multilateralism.
As a senator, he was given a seat on the Senate Foreign Relation Committee and would align himself with the GOP realist Dick Lugar. When Obama began his run for the presidency(2007), he would hire two prominent Realists as advisors, Colin Powell and Dan Shapiro.
Obama's foreign policy team is composed of Realists and Liberal Interventionists, but the Realists dominate. Obama hired the GOP Realist Brent Scowcroft to vet all his foreign policy appointees