Iran today dismissed US Secretary of State Ms Hillary Clinton's warning over its nuclear programme, as Britain ordered its financial companies to cease trading with two firms from the Islamic republic. Iran's Foreign ministry spokesman Hassan Ghashghavi said Tehran would not listen to talk of deadlines, but added that it was committed to following international law when it comes to its nuclear programme. He also repeated Iran's defiant tone that uranium enrichment was its non-negotiable right.<br/><br/>