As I recall In the cold war, certain UK NATO declared airfields were defended with around 16 Bloodhound and 20 Rapier SAMs. The nice friendly chaps just across the border had only obsolete and agricultural ground attack jets. Unfortunately - they were likely to be throwing around 100-150 of these at each base....100 minus 36 = 64 It was an equation we were not particularly happy with. War exercise scenarios were lasting only 3 days and were always ending in tears...
How many obsolete and agricultural jets are available to certain South American countries? Not many I hope....
Too difficult? - Tell you what - let`s just ignore decimal point positioning and spend 42 billon to save RBS funding it from the 4.2 billion cut from Defence. You know it makes sense.