in the south of gaza. meanwhile, aid agencies estimate nearly 2 million people have already been displaced that s almost 80 % of gaza s population. thousands have tried to go to un schools to find shelter but have had to sleep in front of buildings as there is no room for them and most of those are struggling to find safe water and food, deepening the humanitarian crisis as israel s military operation against hamas grinds on. for more on the aid situation, here s our diplomatic correspondent paul adams in jerusalem. the israeli army is fighting intense street battle with three parts of the gaza strip, two in the north, in the jabalya refugee camp and gaza city known as schedule year. both areas the israelis have described as hamas strongholds. also in the southern city of khan younis, the largest in the southern gaza strip. and there, the fighting in the south is moving so quickly that the aid agencies, frankly, are not able to keep up. remember, this is an area where huge