The International Atomic Energy Agency reported that Iran has installed more than 1,000 advanced IR-2m centrifuges and is preparing to set-up 2,000 more.  Iran has also increased the number of older IR-1 centrifuges to 15,000, most of which are operating.  The IR-2m is estimated to be three to four times more effective at uranium enrichment than the IR-1.  The IAEA also stated that Iran has delayed the start-up date for the plutonium-producing Arak reactor to after the first quarter of 2014.