Surgical strikes against military targets, clandestine targets and paramilitary organizations that are Hamas or clearly identified Hamas allies, would be a start. Between Israel's spy agencies and our NSA we have the most sophisticated "listening," and related capabilities on Earth. If anyone could find and eliminate anti-Israel cells, we and they could. Netanyahu is extracting hyper-vengeance. This approach is probably designed to kill any chances for a "Two-State Solution," or similar long term peace initiatives.