U.S. Department of State released a statement on U.S.-DPRK Bilateral Discussions, which states that
the DPRK has agreed to implement a moratorium on long-range missile launches, nuclear tests and nuclear activities at Yongbyon, including uranium enrichment activities. The DPRK has also agreed to the return of IAEA inspectors to verify and monitor the moratorium on uranium enrichment activities at Yongbyon and confirm the disablement of the 5-MW reactor and associated facilities.
According to the statement, the agreement was a result of discussions in Beijing held on February 23-24, 2012. No timeline for the return of IAEA inspectors was given.