Impiger
As has been well documented, the strategic effect of Black Buck was centred around the notional ability to schwack the Argentine mainland. What part of this notional ability would be missing with a Tomahawk strike. Indeed, a sub could loiter undetected within range for bloody ages and prosecute targets until it ran out of missiles or was replaced by another sub.
Surely this would have an even greater strategic effect?
And as the munitions are GPS guided, the accuracy of the initial runway denial strikes would be even more unnerving for the junta in Buenos Aires?