CarolC,

Your contention that the fully mobilised Arab Armies arrayed against Israel and deployed on her borders were defensive formations is laughable.

To anyone who has studied strategy and tactics there are easily discernable (i.e. marked) differences between units drawn up to defend and those massed to attack. Those differences relate to disposition and composition of units, particularly in armour and artillery. The Egyptian, Syrian and Jordanian army dispositions taken up in May and June 1967 were consistant with those of an army in attack posture.

It may seem a little odd, but an Army is at its most vulnerable when it is assembling for an attack. Nothing is in the right place to repell an attack, which would explain why the Israeli forces who were massively outnumbered managed to defeat the Armies of all three nations so decisively, particulary if as you say CarolC that they already knew of Israel's plan of attack.