Sorry, simply can't support you in that. Besides, there are multitudinous Christians in those places as well as a myriad of Americans (military, businessmen, tourists, etc.)
In the long run it's better to let Moslems make the decision about whether to do the pilgrimage with the consequent risk of loss of life or not. A ring of radioactive debris around Mecca would leave it all up to them. (Besides, there are no Christians or Americans in that area ~ just Moslems).