Serving as a requital or retribution.

adjective. Of or relating to retribution; of the nature of retribution; involving retribution or repayment.

adjective. of or relating to or having the nature of retribution

adjective. given or inflicted in requital according to merits or deserts

"Prediction: the Saddam verdict will provoke retributory violence by radical Sunnis, with significant potential for Shi'ite militias to respond via death squads."

just  punitive  punitory