Off subject, but I have noticed this frequently in recent articles and comments: why do some use "G-d" for "God"?
The first illusion is that by disengaging from our enemy and from our land, which our enemy claims, we will lessen the friction and achieve peace.
By disengaging, Israel gave their opponents exactly what was demanded for peace - and thus laid bare the lie, a vital step.
The second illusion is that by building a fence we will insure security and the enemy will be unable to attack us.
By building a fence, Israel defined its opponents and where they are - a vital step in preparing the next stage.
The third illusion is that they will remain there and we will remain here, and never the twain shall meet.
Plainly the twain would meet - without the complications of non-combatants being on the "wrong" side of the line.
It was not illusion, though many may have misunderstood.
It was preparing for the inevitable by giving diplomacy absolutely every chance, placing responsibility firmly upon the opponent, and ensuring that one's own people are firmly within a defendable border. Having defined the situation starkly and unavoidably, what comes next can be done with clear conscience - and those who demand continued parley are either ignorant or enemies.