It is part of the War against UNRWA which could thwart and prevent the goals of the Israeli government from being successful and realised.
The worst of all, UN and UNRWA need to uphold impartiality by mandate, even when they are the target.
It becomes very clear with every attack and obstructing of UN bodies, to be able to do their humanitarian aid work in support of the palestinian civilian population.
It is clearly evidence of wanton destruction of UNRWA capabilities to try to get rid of it. It is warfare out of hatred in it’s most visible form.