Strongly disagree with changing it to that URL. This the kinda news you don't want to get from an involved primary source... that page is missing a crucial detail (the national security concern mentioned is espionage) and could just disappear whenever it becomes convenient to get the news cycle on the next thing. It will almost certainly be a 404 Not Found by the time 3 years have passed.

Then there could be a second archive link.

I mean they are literally the same article in essence. One is from the official source and the other is paywalled with nothing worthy added.

The choice is clear.