Sen. Marco Rubio (R-FL) really thinks George W. Bush was a fantastic president. In his major foreign policy address to the Brookings Institution, the possible Mitt Romney running mate puts himself strongly on the side of first-term Bush, Joe Lieberman, and the broader activist tradition. He also criticizes those who hold contrary views in his own party.
This is a battle that has been brewing for some time. I've written about the Tea Party foreign split between Rubio and Rand Paul, which has manifest itself in the senators' disagreement over Georgia's role in NATO, among other issues.
UPDATE: Rand Paul delivered a foreign policy address at Johns Hopkins University last year.