update iran US intelligence chief.
Director of National Intelligence John Negroponte told BBC Radio's Today programme Tehran could have a nuclear bomb ready between 2010 and 2015.
His comments come after key world powers agreed proposals in Vienna to persuade Tehran to halt its research.
The UK said the UN Security Council would act if Iran did not comply.
But on Friday Russian Foreign Minister Sergei Lavrov said the Vienna agreement meant that force was ruled out.
Lessons learned
Iran resumed enrichment of uranium this year but remains a signatory to the nuclear Non-Proliferation Treaty and maintains that its activities are aimed only at energy production.
However in his interview with the BBC, Mr Negroponte said: "[Iran] seems to be determined to develop nuclear weapons.link if needed
http://news.bbc.co.uk/1/hi/world/mid...st/5039956.stm .
Dreamer