It is not known or clear how the INSS reached its conclusions and whether only the operational considerations were discussed or whether the short and long term political implications and fallout were factored in the cost/benefit calculations. But unless Israel has decided to go ahead with or without the blessings of the US what is the point of outing this report (if it indeed exists). Is this piece of information part of the 'war of nerves' in which both sides are engaged?. Why can't those yahoos keep their trap shut?
Law expanding definition of terrorist activity passes first Knesset reading (Haaretz)
from the article: Think tank: Israel could attack Iran's nuclear program alone