[bobjam]

In Episodes 1 and 2, slavery exists on Tattoine. In Episodes 4 and 6 it does not. Go figure.

[RandallFlagg]

In Episodes 1 and 2, slavery exists on Tattoine. In Episodes 4 and 6 it does not.
Go figure.

Exactly!
And as Governor Tarkin stated when asked how control would be maintained after the dissolving of the Senate: "The regional governors now have direct control over their territories. Fear (long pause) will keep the local systems in line. Fear of this battle station."
(I typed that from memory. Yes, I have no life)
Anyhoo, as is the case here. Iran wouldn't attack Israel because the Emperor and his Death Star would come after them.
Fear works wonders in these situations.