Perhaps it's more accurate to say that the spy organisations have become one entity - a supra-national and extra-legal one which ignores national laws or political control - GCHQ for example is completely in the service of the NSA now, to the extent that their internal briefing documents and top-secret information are all stored on NSA servers (hence Snowden's access to them), and their activities are dictated by the priorities and funding of US agencies.

Nations continue to disagree (for example the UK refused to back the intervention in Syria), but the spies will always cooperate.