"Swedish ambassador goes berserk over Assange,'' read Monday's Wiki-tweet. It rang a bell, as it bounced around the globe, for while most diplomats are polite to the point of somnambulism, my sole encounter with the Swedish ambassador had been distinguished by rage (his). This rage, rooted in WikiLeaks, had itself been Wikileaked.

Sven-Olof Petersson is Sweden's man in Yarralumla. By now he may be wishing he'd followed the advice I give my 13 year-old.

It's this. If you have something savage to say, sleep on it. Then, if it really must be said, pick up the phone. Say it in person. Shout it from the rooftops, if need be. But under no circumstances commit it to cyber-space. Cyber-speech, seemingly ethereal, is etched in stone.

Back story: last April I wrote a column about Julian Assange. ''It's quite clear,'' I said, ''that Assange is not guilty - not of rape, not of treason'', but it was more a logical deduction (from the definition of these things) than a claim to knowledge of the events. In particular, I wrote of my dismay at what can happen to speakers of truth, especially at the hands of those who pretend to uphold it.

It made the Swedish ambassador mad. Really mad. We now know it made him, by his own admission, out-of-control mad.

It was an opinion piece. And I did call the Swedish legal system ''impenetrable''. LOL. Yet there are facts here.

Assange had not been charged with any crime. The Swedish authorities had repeatedly refused even to question him in London, falsely saying it was illegal. Moreover, as Malcolm Turnbull told a university audience this year (contradicting Gillard), Assange had broken no Australian law. All this is still true.

Yet a European arrest warrant stands ready to whisk Assange to Sweden, where consensual sex without a condom can - for reasons I'll never understand - count as rape, where he can be locked in solitary without charge or extradited to America.

There, a grand jury - or secret military court - has been convened, again without charge. It can convict him, even apply the death penalty, without scrutiny or defence. Petersson insists ''a person risking the death penalty cannot be extradited'' but the Swedish Foreign Minister, Carl Bildt - whom WikiLeaks claims is a US spy - repeatedly refuses to give this assurance.

Yet our government has given Assange minimal assistance. Despite what Jane Clifton-Bassett, the organiser of Thursday's candlelight vigil for Assange, calls this ''outrageous flouting of the law'', the government chooses ''to put the American alliance first, and an Australian citizen second''.

Petersson responded to my April story with an angry letter, published in the Herald. His ''facts'' were that the ''Swedish judicial system is transparent and independent'' and that Assange should have ''full confidence in the Swedish judicial process''. He would say that - right?

A second, angrier Petersson email came to me personally. Manfully resisting the urge to publish, I filed it, more fittingly, in the bin.

And forgot about it until, this week, the emails resurfaced, unexpurgated, along with Petersson's admission that his colleagues considered his missives extreme. ''But,'' he notes, ''I couldn't stop myself!''

In these now-public letters, Petersson accused me of harbouring a ''special contempt for Sweden''. (In fact, until then, I'd always wondered why Scandinavia was so much more civilised than we.) He derided me as an ignorant fantasist, a purveyor of ''any kind of rubbish'' and - worst of all - ''an architect and writer from Downunder''.

It's pretty funny. The mis-spelling, the splatter of exclamation marks and the eggy emotion sound more like some suburban troll than a high-order professional or diplomat.

The aggression is less amusing. This is how bullying works. After a while we start to anticipate, self-censor, evade the rage, like children tiptoeing around father.

This is ironic, since the Swedish case pivots on the ''ultra-feminism'' that many see as having colonised Swedish politics. This has not only shaped the unfair rape laws to which Assange, once extradited, would be subject, but also unites many key players.

All these are active members of the ultra-feminist Social Democrat party: the prosecutor Marianne Ny; the plaintiffs' lawyer Claes Borgstrom; his practice partner Thomas Bodstrom (the Swedish justice minister, 2000-06); the principal plaintiff Anna Ardin - who invited Assange to Sweden originally and wrote the notorious ''Seven Steps to Legal Revenge''; and the police officer Irmeli Krans to whom Ardin took the secondary plaintiff, Sofia Welin. Welcome to Sweden's so-called ''duckpond''.

But when a mere opinion maddens a potentate into uncontrolled aggression, you have to wonder: why so defensive? What are they hiding?

Petersson was right about one thing. I know little of the Swedish legal system. (I do know educated Swedish-Australians, like retired medic Martin Gelin, who reinforce my impression that it is convoluted - some say ''mediaeval'' - and, with its politically appointed lay judges, heavily politicised. They also say Petersson is an embarrassment who should be sent home.)

Assange has been effectively detained for two years without charge. His only sin was having unprotected sex (which, even my 13-year old knows, would render him as vulnerable to STDs as the women).

He has won a Walkley, the Sydney Peace Foundation Gold Medal, and the Martha Gellhorn Prize for Journalism. He came second in the Huffington Post's next head of the BBC poll (after Jeremy Paxman) and is regarded by many as the century's greatest journalist, with supporters including Mary Kostakidis, Julian Burnside, Geoffrey Robertson and Jemima Khan.

But even if Assange were, as some say, a zionist, cultist, narcissist, misogynist or Marxist - even all of these - he'd still be entitled to a fair and open trial.

There are genuine doubts as to whether this can happen in Sweden, and worse about the US trial. (With the imminent and sinister Trans-Pacific Trade Agreement, its contents so secret they can't be disclosed for four years, we'll never exert pressure on the US.)

Australia must therefore demand a Swedish guarantee that Assange will not be sent to America. Otherwise he, and our own rights to truth, may end up naked in a cell like poor, sweet Bradley Manning.

The Assange vigil will be held tonight at 7pm on the Parliament House lawns, Canberra.

Ambassador's rage doesn't dispel facts