That makes no sense whatsoever. If the NSA has broken whatever cipher suite the GRU uses, or the Iranian RG, or whomever, please explain how keeping that fact

That makes no sense whatsoever. If the NSA has broken whatever cipher suite the GRU uses, or the Iranian RG, or whomever, please explain how keeping that fact a secret endangers the USA? Keep in mind they share info with the other Five Eyes and select other allied nations.