> I’ve been under the impression that he gave all the files to journalists and let them be the judge of what’s relevant.
That would mean he wasn't careful at all, having outsourced the selection of what data to make public to a 3rd party.
> Sometimes things go beyond domestic vs international - because it’s someone else’s domestic surveillance and if that someone is an ally it’s at least a tiny bit problematic and worthy of review.
Everybody does this with everyone, allies and enemies alike, and doing so is a matter of state foreign policy. This type of activity is exactly what the NSA is charted for. We've reviewed this stuff in writing the laws that charter the agency and govern it's activity.