All governments spy on all other governments. The only differences in spying policies are: 1. Effort expended, money in particular. 2. Risk tolerance, toward

All governments spy on all other governments. The only differences in spying policies are: 1. Effort expended, money in particular. 2. Risk tolerance, toward exposure and blowback. 3. Competence of execution. #3 is a function of the spy org, #1 and #2 are functions of pairwise relations between the particular governments. Even the closest of allies spy on each other. We don't hear about it much, because risk tolerance #2 in such efforts is more wisely kept very low.