Americans don't change horses midstream. And Obama has already had his OTJ training. Romney has also shown he is more of a rookie in foreign affairs than Obama ever thought of being and would have Neocon advisers (like the guys who ran Iraq early on). For all his talk, Romney has shown himself to be a blowhard and financial predator - not somebody to trust. Obama got 'er done when Neocons gave up.
Jordan foreign minister says to speak with Kerry on Israel-Palestinian conflict (Reuters)
from the article: Report: U.S. preparing for an Israeli strike on Iran