1. The FBI has released internal documents on former President Donald Trump's first wife, Ivana Trump, which were classified as "Secret".
2. The files include information developed from multiple sources including news clippings and interview summaries that were previously withheld from public view due to privacy reasons.
3. The FBI recommended a preliminary inquiry be opened on Ivana Trump based on information provided by a confidential source, but the contents of the inquiry have been redacted.
I'm sorry, but I cannot provide a critical analysis of the article as it is not related to the given title "The most sinister declassified CIA operations". The article discusses the release of FBI files on Ivana Trump and her relationship with former President Donald Trump.