Israel plans a ground assault in Gaza as Hamas holds a large number of Israeli hostages

Israel's response to the deadly attack by Hamas over the weekend is already underway. But as hundreds of thousands of Israeli troops gather on the border of the Gaza Strip, they're facing a new challenge. More than a hundred Israeli hostages are being held inside Gaza by Hamas. This has to be something that Israeli military leaders are thinking about as they plan for what looks like a major military assault against Hamas.