Former US army vice chief of staff General Jack Keane says sources reveal Hamas leader Yahywa Sinwar is protecting himself and his family with multiple Israeli hostages.

Mr Keane joined Sky News host Andrew Bolt to discuss Israel’s ongoing war on Gaza.

“My sources tell me that Sinwar, who is the number one leader in Gaza of the Hamas organization, has 15-20 hostages protecting him and his family,” Mr Keane said.

“That’s why they have these hostages to guarantee their survival.

“Israel is absolutely right in putting military pressure on them to force the release of the hostages."