- Rescuing hostages from Hamas would require a "massive" ground attack, said Ret. Gen. Barry McCaffrey.
- Israel has to punch into the dense Gaza strip with tanks and troops, and conduct searches, he said.
- The rescue effort would be a "bloody mess" and "catastrophic" to Palestinian civilians, he warned.
Israel must launch a fierce ground assault in the Gaza strip with armor and infantry if it hopes to recover dozens of hostages held by Hamas, retired four-star US Army Gen. Barry McCaffrey said.