[ScottinVA]

Romney should keep digging at that wound, demanding clarification that it was Hillary`s Dept. of State that was to blame for the deaths of Amb. Stevens and the other three.

[American Constitutionalist]

Romney should stay the course and stay focused on his campaign.
When your opponent is digging a hole for themselves and don't realize it the best thing to do to stand back and watch and stay out of their away.
There will be a opportune time and a appropriate time for Romney to make his points.