As someone with experience in this field, I can tell you with utmost certainty that the missiles the West fired at ICBMs are certainly not more expensive or technically harder than either of the aforementioned missiles. ICBMs in particular are almost a non threat to the world
you would need something silly like 50x more interceptors than ICBMs and SLBMs and these are more expensive and technically harder than either
As someone with experience in this field, I can tell you with utmost certainty that the missiles the West fired at ICBMs are certainly not more expensive or technically harder than either of the aforementioned missiles. ICBMs in particular are almost a non threat to the world