Several residents of the Gaza Strip have started leaving their homes after Israel's military's 24-hour ultimatum to relocate south ahead of an expected ground invasion that risks high casualties. A video showed civilians in several cars - with clothes, and mattresses tied to their roofs - evacuating the small strip of land they called home for all these years. The UN says Israel's move will have devastating impact on Gaza, calling Israel's ultimatum to relocate within 24 hours horrendous.