On Friday, the Aftonbladet tabloid reported that Bildt, at the age of 27, reported to the United States about details of closed-door government coalition talks in 1976.
That information was then sent on to the CIA, the paper claimed.
“He was well informed. I reported on everything he told us,” US envoy Ronald E Woods told the paper.
Information about the make-up of the three-party coalition, the parties’ attitudes to nuclear power, and how they would handle a referendum reached the United States before it reached the Swedish people.
Per Ahlmark of the Liberal Party (Folkpartiet) was involved in the talks and emphasized that nothing said in the meetings should have been reported to outsiders.
“Everything we said was secret. Not only for foreign powers, but also for our own parties. We were very thorough about ensuring that nothing would get out,” he said.
“Had I known that Bildt went and blabbed, I would have been very annoyed.”