Harel, this Wikimania is anyway highly influenced by politics, no
matter what we want; which includes this thread. If Sari Nusseibeh is
willing to help, you should take that help. I am sure that he is a
reasonable person, who would try to avoid making possible problems to
us.

Small Disclaimer here: I don't know the guy personally, I got his name from contacts of contacts. Thus I can't vouch for his willingness to help. I think there is a big chance he will be though.