Universally all GOP candidates have been critical of President Obama for not leaving troops in Iraq, which could have stopped the rise of ISIS.  Is it that simple?  Or was Obama in a no win situation of either accepting the terms the previous administration signed with the Iraqi government (placing US troops under Iraqi’s legal system) or pulling the troops out.  This back and forth between Ben Carson and myself, is an example of the lack of a clear answer from GOP candidates give, which amounts to, “I would have negotiated a better deal than either the Bush or Obama administration could have” with no specifics on how,