By Ivan Watson, CNN
Representatives from six world powers and Iran returned to the negotiating table Friday in Kazakhstan for fresh talks aimed at breaking the deadlock over Iran's controversial nuclear program.
When negotiators from the six-nation diplomatic bloc last sat down with Iran's envoy in the Kazakh city of Almaty in February, they delivered what they characterized as a "fair and balanced offer" to defuse tensions over the Iranian nuclear program.
"We are waiting to see how Iran responds to the proposal we put on the table," Michael Mann, a European Union spokesman, told journalists shortly after negotiations resumed on Friday.
Details of the offer from the six governments have not yet been made public. EU foreign policy chief Catherine Ashton described it as a "very clear and concise proposal" for confidence building measures.
Last March, technical experts from Iran and the so-called "P5+1" countries, which consist of the United States, France, Britain, Germany, China and Russia, met for more than 12 hours in Istanbul to discuss the proposal.FULL STORY