The event was organized by the Danish Atlantic Council in cooperation with the US embassy.

But it was cancelled by the thinktank after Carla Sands, the United States ambassador to Denmark, refused to allow a speaker critical of President Donald Trump to take part, Danish and US media have reported.

“The process has become too problematic, and we can’t stand by in this situation, let alone ask our speakers to do so,” Danish Atlantic Council general secretary Lars Bangert Struwert said in a press statement.

Sands informed the council that she did not agree with the participation of American academic Stanley Sloan and asked for his presentation to be cancelled, Ekstra Bladet reports.

Sloan is a visiting professor at Middlebury College, fellow at the Atlantic Council and former CIA analyst.

“We were never in doubt that Stanley Sloan would have provided an apolitical and objective contribution to our conference. Stanley Sloan promised us this,” Struwe told TV2.

“That’s why we stood by Stanley Sloan as a speaker until the American ambassador demanded that (Sloan’s) participation be cancelled,” he added.

Although Sands has not made any official comment on the matter, the Danish Atlantic Council has said that the order to cancel his participation came directly from the ambassador.

“[T]he Danish Atlantic Council via the official channels became instructed that Ambassador Carla Sands does not want (your) presence at the Conference,” Struwe wrote in an email to Sloan according to Buzzfeed.

The US embassy in Denmark tweeted on Sunday that Sloan’s invite “did not follow the same deliberative process of joint decision-making and agreement that we followed when recruiting all other speakers.”

The embassy “supports freedom of speech as enshrined in the First Amendment to the US Constitution. It’s unfortunate that (the Danish Atlantic Council) decided to cancel the Nato 70th Anniversary Seminar,” another tweet read.

Sloan has previously criticized Trump’s management of trans-Atlantic relations. He was invited to the Copenhagen event around ten days ago, Ekstra Bladet writes.

The matter provoked an angry riposte against Sands by her Obama-era predecessor, Rufus Gifford, who called the embassy’s conduct “profoundly disappointing, shocking and unAmerican”.

“…now we see the Embassy is blocking the speech of an expert in his field, a transatlanticist who happens to be a Trump critic,” Gifford wrote in a series of tweets.

“Well, there are a lot of us. The moment you block our speech is the moment you realize you are losing. And it only proves the point we make,” he added.

Sands, a former chiropractor, board chairperson and actress, took over from Gifford in 2017 as US ambassador to Denmark.

She had no previous diplomatic experience prior to the posting.

The ambassador’s personal Twitter account often retweets articles from far-right outlets and commentators including Breitbart, Prager and Fox News host Sean Hannity.

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