he's the spokesman for the world health agency, via skype. christopher, thankful that you can be with us here. what is priority number one for you in gaza? >> right now, the number of displaced people seeking sanctuary is above 50,000 people. that's the same level of the gaza fighting five years ago. the main purpose is to shelter them, bring food, water all that the number of people in 44 schools in gaza will need. of course, the other major priority is the security of civilians. we all on all of the parties to respect the invulnerability. in the round of fighting years ago, hundreds of installations were hit. we've also had a situation recently where we discovered 20 rockets in an unra school which wasn't being used.