President Trump ordered a wide swath of materials "immediately" declassified "without redaction" on Monday, only to change his mind later in the week by allowing the DOJ Inspector General to review the materials first. 

The Times reports that the UK's concern was over material which "includes direct references to conversations between American law enforcement officials and Christopher Steele," the former MI6 agent who compiled the infamous "Steele Dossier." The UK's objection, according to former US and British officials, was over revealing Steele's identity in an official document, "regardless of whether he had been named in press reports."