I heard John Bolton on Fox News this morning and both Michael Lerner and Pat Buchanan are mistating the concept.
Proportionate response means using enough force to end the problem agression before you -- not the tit for tat nonsense implicitely argued for by Michael Lerner.
John Bolton says the real meaning of proportionality is included in the Christan concept of a just war.
Given that
(1) Islam dictates that Jihad continue as long as any land that was once Muslim is under the control of non-Muslims, and thatthe aggression will continue until the Gazans are all dead or they abandon Islam.(2) the Arab aid-providers that finance Hamas will only continue funding Hamas as long as Hamas behaves according to Islam,