"It would take us about a week to install the equipment that would be necessary to have in place before they could resume any activities there and also Director-General el-Baradei reacted in a statement today," Fleming said. "He called on Iran to continue the negotiation process with the EU-3 and not to take any action that might prejudice the process at this critical stage."
Tehran announced plans to resume some nuclear work at its Isfahan facility after a nine-month suspension, as a deadline for the European Union to deliver a package of trade and security incentives expired.
The three EU countries negotiating with Iran -- Germany, France, and Britain -- said they were days away from submitting the proposal.
The United States has joined Britain, France, and Germany in warning Iran that they would take the case to the UN Security Council if it restarted its nuclear program.
(compiled from agency reports)