New York Times: Iran has admitted that it conducted small-scale experiments to create plutonium, one of the pathways to building nuclear weapons, for five years beyond the date when it previously insisted it had ended all such work, a senior official of the International Atomic Energy Agency is expected to report Thursday. In an oral statement to be delivered at a meeting of the nuclear watchdog agency’s board, the agency’s deputy director, Pierre Goldschmidt, will say Iran made the admissions after being confronted with the result of laboratory tests conducted on samples collected from an Iranian nuclear site.

The Wall Street Journal: The United Nations nuclear watchdog will criticize Iran for misrepresenting the extent of its experiments with plutonium and for failing to answer outstanding questions about its nuclear program. The criticism, which will be presented in a speech today to the International Atomic Energy Agency board, is unlikely to scuttle European-led negotiations intended to wean Tehran of its alleged weapons ambitions.

Associated Press: Iran has acknowledged working with small amounts of plutonium, a possible nuclear arms component, for years longer than it had originally admitted to the U.N. atomic watchdog agency, according to a confidential report made available Wednesday to The Associated Press. The report, to be delivered as early as Thursday to a board meeting of the International Atomic Energy Agency, also said Tehran received sensitive technology that can be used as part of a weapons program earlier than it originally said it did.

Reuters: Iran has admitted to experimenting with producing plutonium, which can be used for atomic bombs, much more recently than it originally told the U.N. nuclear watchdog, according to a draft U.N. speech.