CAIRO/JERUSALEM (Reuters) -The Israeli military said on Wednesday it was opening an additional route for 48 hours that Palestinians could use to leave Gaza City as it stepped up efforts to empty the city of civilians and confront thousands of Hamas combatants. Hundreds of thousands of people are sheltering in the city and many are reluctant to follow Israel's orders to move south because of the dangers along the way, dire conditions, a lack of food in the southern area, and fear of permanent displacement. At least 30 people were killed across the Gaza Strip on Wednesday in Israel's latest strikes, including 19 in Gaza City, local health authorities said.