He "doesn't know" because there is no acceptable answer to that question....I had no idea of the complexities around Gaza until I started reading up on it during this war. The UN considers it to be occupied by Israel, Israel considers it not to be. If its not part of Israel its stateless, but Israel controls the borders and everything going in and out. If it is part of Israel the IDF are basically destroying their own territory and then asking the rest of the world to rebuild it (without even going in to the human cost).
If Cameron comes down that it's occupied he's going to annoy Israel. But if he says it's not occupied he might be putting the UK in a position where we are obliged to pay for rebuilding (and also potentially annoy Israel, as it becomes obvious there is a siege at play).
It's an absolute mess.
I seem to be very offensive to some when I post on this so if I've upset anyone on this thread it's not intentional and I apologise.