Perhaps the contest comes down to this...

Who is more likely to keep us out of war with Iran: Barack Obama or Mitt Romney?

Obama has been rattling sabers for days. Romney has been rattling sabers for years. Neither can be trusted. But perhaps one or the other can be pressured...? Obama knows that a war with Iran would place him at war with his own party, which means he can't act before the election. (Except in the case of a clear casus belli.) But afterward...