Many depend on co-operation with a wide array of increasingly unhappy locals.

ECONOMIST: Africa and China

Any hope of regional co-operation is drowned in a staggering array of local-government entities.

ECONOMIST: Urban planning

It comes from the operation of attentional and perceptual processes interacting with a visual array changing at minimum frame rate.

FORBES: The Mystery Of Social Media: Talking With ISPSO About 'Screen-Relations'

The IAEA has made similar complaints in previous quarterly reports, and Iran is under an array of sanctions as a result of its lack of co-operation.

BBC: Iran installing new Natanz centrifuges, says IAEA

The huge trading and logistics operation, backed by a savvy business-intelligence unit, has a global presence in a vast array of commodities that far exceeds that of rivals such as Cargill or Trafigura.

ECONOMIST: Xstrata and Glencore