Bernard Connolly, global strategist at Banque AIG, said the Fed and the Treasury were doing too little, too late, to stave off disaster.

"Unless there is a very rapid change of mind, depression - with all its horrors and consequences - will be inevitable..." he said.

"We fear that a virtual nationalisation of the financial system will now be necessary," he said....

Albert Edwards, global strategist at Société Générale, said Washington's serial bail-outs are the inevitable result of the credit bubble of preceding years. "This was all baked in the cake long ago. What we have seen so far is just a dress rehearsal for the deep recession that is coming. America is going to be losing 500,000 jobs a months. That is when we will see interest rates go to zero. The deficit will be covered with printed money as it was in Japan. The endgame will be helicopters full of cash dropped by Ben Bernanke," he said.

Jesus

Were the financial crisis to end today, the costs would be painful but manageable.... Unfortunately, however, the financial crisis is far from over, and it is hard to imagine how the US government is going to succeed in creating a firewall against further contagion without spending five to 10 times more than it has already, that is, an amount closer to $1,000bn to $2,000bn.....

It is hard to predict exactly how and when the mega-bail-out will evolve. At some point, we are likely to see a broadening and deepening of deposit insurance, much as the UK did in the case of Northern Rock. Probably, at some point, the government will aim to have a better established algorithm for making bridge loans and for triggering the effective liquidation of troubled firms and assets, although the task is far more difficult than was the case in the 1980s, when the Resolution Trust Corporation was formed to help clean up the saving and loan mess.

Of course, there also needs to be better regulation. It is incredible that the transparency-challenged credit default swap market was allowed to swell to a notional value of $6,200bn during 2008 even as it became obvious that any collapse of this market could lead to an even bigger mess than the fallout from subprime mortgage debt.

It may prove to be possible to fix the system for far less than $1,000bn- $2,000bn. The tough stance taken by regulators this past weekend with the investment banks Lehman and Merrill Lynch certainly helps.

Yet I fear that the American political system will ultimately drive the cost of saving the financial system well up into that higher territory.