Personally I was wondering about the electromagnetic pulse consequences.
It feels satisfying to say "We'll turn Baghdad into GLASS!!!" (in the event of WOMD use), but it just doesn't work like that. Too much collateral damage.
Yahoo reports a high temperature of 105+ with lows in the 76 range.
Prevailing winds seem to blow towards Iran, Afghanistan, and the central asian states. Some fallout would hit Pakistan, India, China and Bangladesh. So, this local use of nuclear weapons ends up polluting a few billion people.