Because at the military level, all encryption is assumed to be compromised. Plus, it is assumed the phone may contain data of national value, so it assumed an

Because at the military level, all encryption is assumed to be compromised. Plus, it is assumed the phone may contain data of national value, so it assumed an adversary would spend unlimited resources to crack the encryption. For example, lets say "unlimited" is $100 million dollars. How many groups would spend $100 million to lets say, get details about the missile defense system in Taiwan? Plenty. As other posters have stated, this is not a phone for anyone but only very specific gov't employees.