Video below (via Nice Deb):
Romney's speech had many specifics, if you view and read the transcript. Basically, he points to America's traditional role as a world leader, and how we are the hope of the world for free peoples and those who yearn for freedom. Under Obama, free people and those who want freedom cannot depend on a "lead from behind" strategy. Romney specifically brought up the 2009 freedom demonstrations in Iran, and how Obama turned a cold shoulder to that uprising.
The attacks of 9/11/2012 and the murder of Ambassador Stevens in Libya was addressed by Romney, who pointed out this was not a spontaneous uprising or the fault of a dumb YouTube video, but the work of radical Islamists.
Failure was the word Romney used against the Obama foreign policy strategy. It is one that he needs to use repeatedly to describe the worst foreign policy president since Jimmy Carter.