The Israeli military has renewed its calls for mass evacuations around the city of Khan Younis in southern Gaza as it expands its offensive against Hamas today.<br />'' <br />''The military urged residents from around 20 areas in the city to head for areas further to the west and south.<br />'' <br />''Meanwhile, The Israel Defense Forces (IDF) said, it attacked 200 Hamas targets in the Gaza Strip overnight.<br />'' <br />''It said, troops struck terror infrastructure at Gaza harbor and claimed it had found booby-trapped tunnels beneath a school. The IDF also reported that three more soldiers were killed in action in northern Gaza yesterday.<br />'' <br />''Hamas-run authorities in Gaza said, the death toll among Palestinians has surpassed 15,500.<br />''