The sudden departure of the former Welsh secretary Ron Davies is perhaps the biggest upset for the Labour government since it took office. BBC News Online sets out the key events, the main political players affected and the greater impact of Labour's first resignation.
A personal tragedy
Davies' political career in tatters
Ron Davies' political career is effectively over after he admitted a serious error of judgement.
The man who would have been leader
Former Welsh secretary Ron Davies was set to become the first "prime minister" of the Welsh national assembly.
Davies' brother tells of father's beatings
The brother of former Welsh secretary Ron Davies has spoken of the brutality the whole family endured at the hands of their late father.
Battle on for Welsh Labour leadership
Welsh Secretary Alun Michael confirms he will stand as Labour candidate for Welsh first secretary after rival Rhodri Morgan refused to join a "dream ticket".
Unite around me - Morgan
Rhodri Morgan, the apparent favourite in the race for the Welsh Labour leadership, has suggested the party could rally more easily round him the Welsh Secretary Alun Michael.
Davies fails to calm speculation
Former Welsh secretary Ron Davies' statement to MPs left many questions unanswered - and posed some new ones.
Man charged over Davies robbery
A man has appeared in court and been remanded in custody, charged with robbing Ron Davies.
Alun Michael: The new Welsh Secretary
Alun Michael, formerly a Home Office minister, immediately took over the post of Welsh secretary.
Paul Boateng: From Benn supporter to Blairite
One of the inadvertent beneficiaries of Ron Davies' resignation is the new Home Affairs Minister Paul Boateng.
Resignation showed 'dignity'
Ron Davies's decision not to stand as the Labour's candidate for Welsh first secretary was greeted with sadness by colleagues and politicians.
Shock and sniggers in Wales
Drinkers in Ron Davies local pub have little
sympathy in his downfall, but former political rivals have expressed their shock and sympathy.
Net support for Davies
A group of Welsh students have set up a Website in support of the former Welsh Secretary Ron Davies.
Scandal, shock and regret
'An absolute shock'
Political leaders have joined in expressing their regret about the resignation of Ron Davies from his position as Welsh secretary.
Davies' and Blair's words of sorrow
The full text of the resignation letter Ron Davies sent to the prime minister and Tony Blair's reply.
The Major Scandal Sheet
Welsh Secretary Ron Davies is the first of Tony Blair's ministers to resign after a "lapse of judgement", but there is still some way to go to catch John Major's unenviable record.