Anybody know what articles he's talking about ?

If you mean the Bin Laden comments, I believe he's talking about videos he's sent in the past.

How could you misunderstand a simple question like that ?
At the end he said he's read multiple legal documents that state that 9/11 was because of ISRAEL and SAUDI ARABIA not our FREEDUMB.

Nexus Lexus (dunno how it's spelt or written) was something i heard at university and it has to do with some sort of database of academic articles. So they will be from various journals, papers, magazines and similar publications but also research papers from universities and similar. Obviously those particular publications depend on the field in question. Nexus Lexus itself is a kind of learning and/or research tool for students and academics, it's the kind of thing your university set you up with an account for.

LexisNexis is a massive database of public records, legal documents and cases, publications, medical journals entries and on and on...

If you're a lawyer you'd use it to look up case decisions and legal statutes, a bill collector would use it to find public records of people in collections, an insurance underwriter can see all kinds of insurance and claim data for a person, a medical researcher could look up published research and journals on specific topics, a journalist would search for other published news items about a topic or individual.

As a database, it has tons of uses and it's very extensive. I think it's also totally expensive to subscribe to.