Why the hearing to free Julian Assange is happening on a tiny ...

Julian Assange's long-running legal odyssey has moved around the world, involving high-level negotiations across Australia, the United States, Sweden, the United Kingdom and Ecuador.  

And now, more than 14 years after WikiLeaks dropped a cache of classified US defence documents alleging war crimes in Afghanistan and Syria, his case will reach a courtroom on a small island in the middle of the Pacific Ocean.

The Northern Mariana Islands is a US territory and one of the closest to mainland Australia.

Assange is expected to be there today to enter a guilty plea as part of a deal with the US Department of Justice that will bring his fight for freedom to a close. 

The terms of the deal mean Assange is likely to be sentenced to time served, meaning at the close of proceedings, he will be free to travel to Australia.

After seven years in the Ecuadorian embassy and five years in Belmarsh Prison, Assange is now about to return to Australia. 

And like his legal battle has done plenty of times before, it brought another dramatic twist — one that takes him from a high-security jail cell in England to the big blue of the Pacific.

If you needed to be in an United States District Court, far from continental USA and close to home in Australia, the Northern Mariana Islands are a good option. 

Saipan is the largest island and the capital of the territory, which begins roughly 70 kilometres north of Guam and stretches across 14 islands.

Saipan is one of several islands known as the Northern Mariana Islands in the Pacific.(Supplied: Visit The USA)

Like Guam or Puerto Rico, the Northern Mariana Islands are part of the US without the full status of a state. 

After time as a colony of Spain, Germany and then Japan, the United States took control of the island in World War II after the Battle of Saipan in 1944; residents voted to become a US territory in 1975.

Residents are US citizens, but cannot vote in presidential elections. 

Crucially, some, like Saipan, also host US district courts.

On Tuesday, WikiLeaks posted on the social media platform X a video showing Australia's High Commissioner to the UK, Stephen Smith, in a vehicle with Assange.

It said the pair were in Bangkok. Assange's jet arrived in the Thai capital earlier in the day and took off again, bound for Saipan, just after 10:30pm local time (1:30am Wednesday AEST).

When Assange is in court today, he will be roughly 3,000km from Australia. Hawaii is more than twice as far away, California further still. 

US prosecutors said the location was important to Assange and that he wanted to go to a court close to Australia. 

In a letter filed to the US court on Saipan, a Department of Justice official thanks the court for accommodating the matter "at the joint request of both of the parties". 

The letter notes "the defendant's opposition to travelling to the continental United States to enter his guilty plea and the proximity of this federal US District Court to the defendant’s country of citizenship, Australia".

Assange and his legal team have long believed it would not be safe for him to enter the United States, but under the terms of the plea deal, it appears a compromise was found.

"He has to front up to charges that have been brought under US law," professor at the University of Sydney's law school Emily Crawford told Reuters.

"It had to be US territory, but it had to be the US territory closest to Australia that wasn't a US state like Hawaii."

Assange is expected to appear at the US District Court for the Northern Mariana Islands in Saipan at 9am.

He will be arraigned and then will enter his guilty plea to the one count of "conspiracy to obtain and disclose national defence information".

The US District Court for the Northem Mariana Islands looks set to be the final stop on Julian Assange's long road to freedom. (Supplied: USDCNMI)

In an interview with the BBC yesterday, Assange's wife Stella said there is an agreement "in principle" with the US Department of Justice but the judge must sign off on it before it is official.

"Once the judge signs off on it, then it is formally real," she said.

Judge Ramona Manglona is presiding over Assange's initial appearance, arraignment, and plea hearing.

She has been serving as the court's chief judge since her nomination in 2011 by then US president Barack Obama after eight years as an associate judge.

Chief Judge Ramona Manglona is overseeing Julian Assange's case.(Supplied: USDCNMI)

The Saipan native was a trailblazer in the US federal legal system where among other achievements she was the first Indigenous woman to pass the local bar exam and the first and only woman to serve on this court.

Ms Assange said the deal they made with the US would be "made public and I think it's a very interesting deal."

"The important thing here is that the deal involved time served — that if he signed it, he would be able to walk free," she told the BBC.

Under the deal he will be sentenced to 62 months of time that he has already served. 

If the judge approves his plea, Assange is expected to return to Australia after the hearing. 

Until yesterday, the next date on the calendar for Assange's legal matters was in early July when a UK court was due to hear his appeal against his extradition to the US.

The Australian government has long been pushing the US to resolve the case and recently US President Joe Biden said "we're considering it" when asked if he had a response to Canberra's request that he end Mr Assange's prosecution. 

So there was some pressure and indication a deal might be possible, but little clue it would involve a trip to the Northern Mariana Islands. 

As news of the plea deal broke, pre-prepared videos from Ms Assange and WikiLeaks editor Kristinn Hrafnsson were released. 

In one, Mr Hrafnsson said: "If you're seeing this, that means he's out."

Julian Assange gazes out the window of his jet after leaving the United Kingdom.(X: Wikileaks)

Meanwhile, the High Court in London on Wednesday sealed an order that revealed a "plea agreement" was signed between Assange and the US government on June 19.

While Assange has left the United Kingdom, he was due in court next week for an appeal hearing, and the proceedings still need to be formally terminated.

The order said conditional bail was approved to allow Assange to travel to Saipan to attend Wednesday's court hearing.

Assange was charged with 18 criminal offences in the US, including obtaining, receiving and disclosing classified information.

The order released by the High Court in London says the agreement is for Assange to plead guilty to one of them, with a "proposed sentence of time served".

It says it is "anticipated that a plea will be entered on Wednesday" and that after it is, "the United States have undertaken to withdraw the extradition request".

ABC/Reuters