Russia should make any mediation conditional on an immediate stop to the bombing, he argues, and the final peace deal must involve western reparations to Serbia.

ECONOMIST: Russia and Kosovo

Those included stored memory (the ability to hold both a stored program and data), conditional control transfer, which allowed the computer to stop and be resumed, and the central processing unit, which allowed all computer functions to be coordinated through one source.

CNN: Machines on a mission

Complying with President Hamid Karzai's edicts to stop growing poppy "was explicitly seen as conditional on rapid compensation and rural development", say the authors.

BBC: A farmer extracting opium from a poppy blossom

The replacement of legal aid by conditional fees which allow solicitors to charge for their costs only if they win will at least put a stop to this abuse.

ECONOMIST: Legal aid