Anyway, Obama did run on foreign policy. End the war, Bush's failed policies, closing GTMO, and not using waterboarding. A bit of "foreign policy" tends to rub off in personal privacy (4th amendment) interests (warrantless snooping is justified on foreign policy grounds).
Romney telegraphed an interest in the currency side of foreign policy, with his remarks about China being a currency manipulator. IOW, Romney can tie domestic jobs into foreign policy.
I don't see Obama doing any better in this debate than he did in the townhall debate, and I'd bet on him doing worse.
They sided with the wanna be dictator in Honduras after their Supreme Court ruled he (the soon to be ex president) was violating the law. That story more than any told us quite plainly what the administrations inclinations were.