The concept here is that if the NSA had done this in the United States, there would have been a court case and the courts would likely have sided with newspapers, invoking the First Amendment.
But once again since this is overseas, the government is pushing for things that would never be legal here; it is curious that they tried to pressure the British though.
We know during war things happen that would never be legal on this soil; it'd be interesting to see a full accounting of what the US gets away with, or tries to, when it is out of the reach of the Bill of Rights.
I am sure they'd talk to me like a child if I brought this up: I just don't understand the threats we face, and the countermeasures and surveillance we need to keep up with them, and that the only reason I can even talk like this is because guys like them do "what has to be done" to keep the US safe.
Whenever this sort of thing is justified, it is nearly always an external threat; and it probably overlaps with the Four Horsemen of the Infocalypse they always invoke to justify kneecapping encryption.
But they always start mid-thought. They don't want to talk about why there's a nuclear arms race, or why so many people are angry at us. They just want to start with "they are," and therefore authoritarian policies and programs are justified.
We know a lot of this is about industry. It takes two to tango, though. We buy what they make.
At least there are nachos.