Hamas - knowing that this kind of logic appeals to most Europeans - has told Israel they they (Hamas) will stop shooting rockets at Israelis when Israelis stop trying so hard to prevent such launches.
This is old, familiar, and tired logic - Israel causes terrorist attacks on her own citizens by trying to prevent such attacks from happening. If Israel would only let Hamas, PIJ, and Fatah do whatever they wanted, Israel should feel assured that these organizations - who can't stop talking about destroying Israel - would surely choose to not go ahead with their plans. The logic is that they are more likely to do certain things when they're easy to do than when they're hard to do.
Lock an alcoholic in a fully stocked bar to prevent him from drinking.
In any event, the IDF has shared footage that shows Palestinian terrorists using a UN-marked ambulance for transporting rockets.
This is a problem.
Ambulances, UN vehicles in general, and also UN personnel, are protected by the Geneva Conventions and relevant UN treaties. But if they are used for combat purposes, they lose that protected status. AND - since it would be impossible for the IDF to know which ambulances, etc., had been hijacked by terrorists, ALL such vehicles would legally be considered suspect.
This is complicated by the fact that Red Crescent/Red Cross vehicles already are compromised by terrorist activities. (Then again, the International Federation of the Red Cross and Red Crescent is either blatantly antisemitic or blatantly cowardly).
There is no simple solution to this problem: Israel has every right to defend itself against terrorist attacks, but has also every obligation to save protected persons. The Palestinians have a humanitarian right to medical care and other relief, but also have an obligation to prevent these from being used for any other purpose.
It is time for the UN and the international community to reassess the effect their assistance has on the humanitarian and political situation for the Palestinians. While it can be argued that Palestinians have every right to pursue self-determination, autonomy, and even the formation of a sovereign state, the UN should make it clear that such a pursuit will be fruitless if a) it is at the expense of an existing sovereign state; and b) is dominated by terrorist organizations. The UNRWA's existence should be reassessed in light of the Oslo accords and the recognition of the Palestinian National Assembly.