Earlier this month, the Israeli Defense Forces sent jets into the Gaza Strip, surgically targeting Hamas military sites in the coastal enclave. The IDF operation was a response to rocket fire from Gaza toward southern Israel earlier that day an attack, according to reports, that the IDF suspects was perpetrated by Islamic Jihad. In punishing Hamas, the IDF was reestablishing previous rules of engagement with the terrorist organization: Hamas will have to restrain other terrorist actors in Gaza or pay a price.