So what do we actually know about the hospital blast - and the contradicting claims by Israel and Hamas, which is designated a terrorist organisation by the UK? It's been impossible to carry out any independent verification - but we’ve been examining the evidence presented by both sides so far.
The roofs of pretty much all the cars are dented inwards. If you search for images of burned out cars, you can see that fire doesn't usually cause dented-in roofs. This means the center of the explosion was above the cars, in the air, and was probably much bigger than the small crater would indicate.