Cause and effect, the riddle of all history, is a particular devil in financial history; and never more so than today, where entire classes of security are collapsing not on public exchanges and stock-tickers but because there are no markets to establish prices this side of nothing.

In modern society, where most people live in cities, and where both needs and wishes are absolved through the same remote agency - money - the distinction between wishes and needs has altogether vanished.

Cause and effect, the riddle of all history, is a particular devil in financial history; and never more so than today, where entire classes of security are collapsing not on public exchanges and stock-tickers but because there are no markets to establish prices this side of nothing.

The world dominion of western thought, forms of organisation, technology and military force is not God-given, nor eternal, nor greatly appreciated by the rest of the world.

My belief, for what it is worth, is that city dwellers cannot understand the world. Insulated from reality by complex and expert systems of provision and police, baffled by fashion and spectacle, city dwellers can distinguish neither the sources of their existence nor the consequences.

For all their current prestige, Osama bin Laden and the suicide bombers are still regarded in all but the most desperate districts of Gaza or Peshawar as romantics with little chance of more than symbolic victories, however bloody and brutal. That gives both the Middle East and the West a small and distant hope of security.

What holds an Arab leader in power is a mixture of violence and prestige. Both President Assad and King Hussein were felt to have defended Arab interests against the world. That, in the end, is more important than what they wear on their head.