How do you evacuate more than a million people across a cramped, urban bombed out territory and get them to safety — in just one day? In the lead up to a likely ground war invasion, Israel on Friday gave residents of Gaza an ultimatum: move to the southern end of the territory, or face the full force of the Israeli military as it plans to go after Hamas militants on the ground. Israel's government is intent on stamping out the Hamas militants who planned and carried out last week's attack that killed 1,300 Israelis. Since then, Israel has launched a wave of airstrikes into Gaza that Palestinian health officials say have killed at least 1,500 civilians. NPR's Leila Fadel speaks with Mark Regev, Senior Advisor to Israeli Prime Minister Benjamin Netanyahu and Ari Shapiro speaks to Dr. Mustafa Barghouti a member of the Palestinian National Initiative in the Israeli-occupied West Bank.Email us at considerthis@npr.org