FBI Releases Files Showing ‘Ever-Present’ Threats Against Queen Elizabeth II

Whenever the late Queen Elizabeth II visited the U.S., the FBI remained on high alert to protect her from potential threats—often from the Irish Republican Army and its sympathizers, according to 102 pages of FBI records released Monday following the monarch’s death last year.

First requested by NBC News via the Freedom of Information Act and posted on the FBI’s electronic resource library, called “The Vault,” the documents compile memos, newspaper clippings, teletype communications, and other records of Her Majesty’s visits dating back to 1976. The files reveal how the...