Palestine & Israel
Both of these guys have historical claims to the land, and both have been the victims of atrocities, many of which continue today. Because of these realities, the land rightfully belongs to both of them. If they can't suck it up enough to have one state (Israelistine :)) with a shared government, they will obviously have to have two states, both of which have the same stature (not like today, where you have two states and one of them is walking all over the other, as the weaker one reacts with pointless counterattacks). These people need to stop acting like territorial children and realize that neither one of them has in interest in working apart. On the contrary, the closer they can become the more advantages they and the region will see.