'Hitler' Bush, by Whitehall's jogging blogger

A former aide to Tony Blair has posted on his website an attack on the Prime Minister which compares President George Bush to Hitler.

The attack, which has shocked Whitehall, appears on the outspoken, sexually explicit, website blog of £100,000-a-year civil servant Owen Barder.

The Department for International Development mandarin's personal site, www.owen.org, could hardly be further from the Civil Service's reputation for opaque discretion.

It features comments and links on a range of subjects from his opposition to the Iraq War to whether marathon running makes men better in bed.

Margaret Thatcher is described as 'pernicious,' while ex-Labour leader Neil Kinnock is praised for making 'one of the finest speeches in British politics'.

Mr Barder, who heads the DFID's Global Development Effectiveness Department, is a former economic private secretary to Mr Blair.

His website features an article entitled 'Fascist America in 10 easy steps' which says: "From Hitler to Pinochet and beyond, history shows there are certain steps any would-be dictator must take to destroy constitutional freedoms. George Bush and his administration seem to be taking them all."

He says: "George Bush and Tony Blair must be very proud that they have created the precedent, through their action in Iraq, which has allowed Russia to announce it will take pre-emptive strikes anywhere in the world."

Mr Barder condemns 'extraordinary renditions' whereby America - allegedly using UK airports with Mr Blair's support - snatched Al Qaeda suspects and tortured them.

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"I do not understand why extraordinary rendition is not causing more outrage in the UK,' he states. And he disputes whether Osama Bin Laden is 'hostile' to the American way of life.

Mr Barder also gives extraordinary details of his private life with partner, Grethe. Discussing his hobby of marathon running, he quotes an unnamed 'sex fiend' female friend as saying: "I had a fling with a marathon runner. Damn that boy had stamina. It shows there is a correlation between fitness and all night sh******."

Mr Barder adds: "Well, possibly, the ones who aren't knackered running 80 miles that week."

In his frank account of a vasectomy, he says: "Today I had a vasectomy. I realise this is relatively unusual for a man of 36 with no children.

"But I have no doubt, and nor does my partner, that we do not want children. Some men think it makes them less manly but that is rubbish. I feel a little nausea, as though I have been kicked in the b***s. I have iced the area to keep the swelling down."

Writing before Mr Blair announced his resignation, he says he does not believe Gordon Brown will become Prime Minister.

Mr Barder's family are no strangers to controversy: his father, Sir Brian, resigned from the Special Immigration Appeals Commission in 2004, accusing Home Secretary David Blunkett of deporting terror suspects detained without trial.

Surprisingly, Mr Barder junior criticises his former boss, ex-Cabinet Secretary Lord Turnbull who recently attacked "Stalinist' Gordon Brown.

"Civil servants have no business revealing their views of Ministers and their behaviour,' says Mr Barder, apparently without irony.