Katharine Gun

On the day of the court hearing, Gun said, "I'm just baffled in the 21st century [that] we as human beings are still dropping bombs on each other as a means to resolve issues."

Katharine Teresa Gun (née Harwood; born 1974) is a British linguist who worked as a translator for the Government Communications Headquarters (GCHQ).

Katherine moved to Taiwan in 1977 with her parents, Paul and Jan Harwood.

Her father studied Chinese at Durham University and taught at Tunghai University in the city of Taichung, central Taiwan.

She has a younger brother who was teaching in Taiwan.

After spending her childhood in Taiwan, where she attended Morrison Academy until age 16, she returned to Britain to study for her A-levels at Moira House School, a girls' boarding school in Eastbourne.

Her upbringing later led her to describe herself as a "third culture kid".

In 1993 she began studying Japanese and Chinese at Durham University.

She graduated with an upper second-class degree, then took a job as an assistant English teacher with the JET program in Hiroshima, Japan.

She left teaching in 1999, and after some temporary jobs, finding it difficult to find work as a linguist, she applied to GCHQ in 2001 after reading a newspaper advertisement for the organisation.

She was previously unaware of GCHQ, and later said, "I didn't have much idea about what they did...I was going into it pretty much blind. Most people do."

Her regular job at GCHQ in Cheltenham was to translate Mandarin Chinese into English.

In 2003, she leaked top-secret information to The Observer concerning a request by the United States for compromising intelligence on diplomats from member states of the 2003 United Nations Security Council, who were due to vote on a second UN resolution on the prospective 2003 invasion of Iraq.

While at work at GCHQ on 31 January 2003, she read an email from Frank Koza, the chief of staff at the "regional targets" division of the American signals intelligence agency, the National Security Agency.

Koza's email requested aid in a secret operation to bug the United Nations offices of six nations: Angola, Bulgaria, Cameroon, Chile, Guinea and Pakistan.

These were the six "swing nations" on the UN Security Council that could determine whether the UN approved the invasion of Iraq.

The plan might have contravened Articles 22 and 27 of the Vienna Convention on Diplomatic Relations, which regulates global diplomacy.

Outraged by the email, she took a printed copy of it home.

After contemplating the email over the weekend, she gave it to a friend who was acquainted with journalists.

In February, she travelled to London to take part in the demonstration against the impending invasion of Iraq.

She heard no more of the email, and had all but forgotten it until Sunday 2 March, when she saw it reproduced on the front page of The Observer newspaper.

Less than a week after the Observer story, on Wednesday 5 March, she confessed to her line manager at GCHQ that she had leaked the email, and was arrested.

In a BBC interview with Jeremy Paxman, she said that she had not raised the matter with staff counsellors as she "honestly didn't think that would have had any practical effect".

She spent a night in police custody, and eight months later was charged with breaking the Official Secrets Act.

While waiting to hear whether she would be charged, she embarked on a postgraduate degree course in global ethics at the University of Birmingham.

On 13 November 2003, she was charged with an offence under section 1 of the Official Secrets Act 1989.

Her case became a cause célèbre among activists, and many people stepped forward to urge the government to drop the case.

Among them, from the US, were Reverend Jesse Jackson, Daniel Ellsberg (the US government official who leaked the Pentagon Papers), and Congressman Dennis Kucinich.

The case came to court on 25 February 2004.

Within half an hour, the case was dropped because the prosecution declined to offer evidence.

At the time, the reasons for the Attorney-General to drop the case were murky.

The day before the trial, the defence team had asked the government for any records of legal advice about the lawfulness of the war that it had received during the run-up to the war.

A full trial might have exposed any such documents to public scrutiny, as the defence was expected to argue that trying to stop an unlawful war of aggression outweighed her obligations under the Official Secrets Act.

She was defended by Alex Bailin KC.

Speculation was rife in the media that the prosecution service had bowed to political pressure to drop the case so that any such documents would remain secret.

A government spokesman said that the decision to drop the case was made before the defence's demands were submitted.

The Guardian newspaper had reported plans to drop the case the previous week.

In May 2019 The Guardian stated the case was dropped "when the prosecution realised that evidence would emerge ... that even British government lawyers believed the invasion was unlawful."

In September 2019, Ken Macdonald, the former director of public prosecutions, said the case against Gun was not dropped to stop the Attorney General's advice on the legality of the Iraq War from being revealed.

He said that a fair trial would not have been possible without the disclosure of information that would compromise national security.