Israel should never invade Gasa or cat water or electriciy to the whole strip. There are tactical measures that can bring a halt to Qassams. 1. Declare a 4-6 km wide area inside Gasa a no-trafic zone and enforce it. Allow traffic stictly in coordination with Abbas to deliver essentials to population. 2. Intensive targeting of Hamas leadership, since they are responsible. Israel is fully justified after showing so much restrain. If the above things are implemented, Qassams will stop- you can bet on this.
from the article: U.S. lauds Israeli restraint in face of Qassam rocket attacks