Iran has until June to address concerns by the United Nations nuclear agency that it has a secret nuclear weapons programme, a senior US diplomat said on Thursday in Vienna, dpa reported.
"Iran is now on notice," said Robert Wood, the United States' envoy to the International Atomic Energy Agency (IAEA). "It's been put on notice that it needs to comply with its obligations, and it needs to do so forthwith."
Wood said if Tehran failed to cooperate, the IAEA's board of governors "in its next meeting in June will have to look at further steps." He did not elaborate.
A Western diplomat said the 35-country board would have few options but to issue another resolution censuring Iran or call on the UN Security Council again to take up the matter.