Obama has botched the Afghanistan war by continuing it but announcing in advance the date upon which we will lose and the Taliban will win in2014. Failed to protect the Lybian embassy and has lied, lied, about what happened, and it continues. Abandoned Israel and cozzied up to the Muslims. He has dithered about Iran, giving it time to both build its bomb, but its missles and other forces as well. Obama cannot even mention Romney's honest ndoubts about the olympics without seeming very silly. It was and is trivial compared to Obama's failures.
Romney has no foreign polocy he needs to defend. Obama has a policy he cannot defend.