FRA made a deal with an entity called Krigsarkivet, a Swedish national archive for military history, to store data they collect in and around Sweden. For like,

FRA made a deal with an entity called Krigsarkivet, a Swedish national archive for military history, to store data they collect in and around Sweden. For like, future research. Naturally they couldn't store this data within the Krigsarkivet's existing archives, so K had to open an archive on FRA's premises. Because this was for future research, the deal was that they were, you know, just to store the data and be done with it. Of course, that's not what happened at all. Instead, they're actively maintaining the archive, meaning that they're effectively using the "for future research" K archive as their own XKeyScore.