Interesting. The Washington Post was bloviating about this today, claiming "nobody told Congress !"
I check and found this site (Khusab) was started in 1986-construction finished in the mid 90's. Congress was very much aware of it then,and Clinton ordered sanctions vs Pakistan.
I knew about it 2 years ago (at least):heavy water reactor capable of making plutonium-which is a bear to work with:
poisonous,highly radioactive,oxidizes easily,etc.
Why the sudden whoop-de-do ?
Don't know. Maybe the lefties at The Guardian trying to do some scare mongering?