as Israel has shown, it has very little tolerance for casualties, so although Israel is far more powerful than all its adversaries combined, does Israel have the stomach for a war of attrition? Already Israel cannot tolerate homemade Qassam's, how will it handle the constant barrage Hezbollah's Katyushas, Syria's Skuds and Iran's Qiams and Fajr's. The constant barrage of missles may not inflict a tremendous number of casualties but will effectively paralyze the whole country and its economy. Lebanon has fought Israel and occupation for 20 years just as Iran has suffered tremendous casualties with the Iran-Iraq war. In this context, staying power will play a much more important role. Israel should tread carefully.
from the article: IDF intelligence chief: Israel's next war will see heavy casualties