As required for this position, TEIXEIRA holds a Top Secret security clearance, which was granted in 2021. Based on my training and experience, I know that acquiring his security clearance, TEIXEIRA would have signed a lifetime binding non-disclosure agreement in which he would have had to acknowledge that the unauthorized disclosure of protected information could result in criminal charges."
Read the pdf below.
You are correct, but the leaked docs were US. They weren't NATO - in fact most of the ones I saw were NOFORN or release only to FVEYE. They dealt with NATO countries but were definitely US docs.
And they were photos of docs. Meaning that someone brought a phone/cam into the SCIF housing those documents and was given access to them. Doubtful this guy had access to those docs.