What future for 'Greater Israel'?

The Middle East 'peace process' is seriously deadlocked. Israel is determined to press ahead with the expansion of settlements. Palestinians refuse to accept anything less than their total freeze, but they are divided on the best way forward - diplomacy or resistance. The diplomatic vacuum leads to more unilateral policies and radicalisation. So how can the international community help? Is a two-state solution still possible, or one state or no state?