Just look at it....from tip to the tail it says " i'm built for speed".....such an elegant aerodynamic shape.....its designer must have been a Da Vindci descendant....
Imagine Canadian CF-105 American F-108 Rappier, F-12 defending the North American borders, against Mig-25's, or better, escorting B-70's on their way to Russia......it would be like watching "Starwars" in the 60's...
When someone considers such magnificent planes, sees a paradox...up to the sisties, aircraft performance was increasing expotentially.....after that.....