Culture makes people understand each other better. And if they understand each other better in their soul, it is easier to overcome the economic and political barriers. But first they have to understand that their neighbour is, in the end, just like them, with the same problems, the same questions.
Half the published articles on Gaza contain a standard reference to its resemblance to a vast open-air prison (and when I last saw it under Israeli occupation it certainly did deserve this metaphor). The problem is that, given its ideology and its allies, Hamas qualifies rather too well in the capacity of guard and warder.