I say indef
block any IP's originating from the institution in question. A
stated goal of trying to influence Wikipedia in a POV way would get any
individual anon blocked, so why not a pseudo-governmental organization?
Technically, their stated goal is to present Israel fairly and
accurately (ie. NPOV). Their blatant COI means they are unlikely to do
that very well, but they aren't openly intending to introduce a POV.
People wih such a FOXy approach to fairness and accuracy have a tendency
to believe the rhetoric of their neutrality.