clipped from: www.telegraph.co.uk   
Handing over the blueprints, which can only be for military use, represents the first step towards meeting the demands of the UN nuclear agency.
The move by Teheran will be seen as an attempt to head off deeper UN sanctions. But it is unlikely to deter Britain and the United States from pressing for tough action from the UN Security Council.

The agency had been seeking possession of the blueprints since 2005, when its inspectors stumbled upon them among a batch of other documents during its examination of suspect nuclear activities.

Iran maintains it was given the papers without asking for them during its black market purchases of nuclear equipment decades ago that now serve as the backbone of its programme to enrich uranium - a process that can generate power or create the fissile core of nuclear warheads.

Diplomats said that the Iranians had failed to meet other key IAEA requests for clarification about their nuclear programme.