The 43rd edition of the SIPRI Yearbook analyses developments in 2011 inSecurity and conflictsMilitary spending and armamentsNon-proliferation, arms control and disarmamentThe SIPRI Yearbook contains extensive annexes on the implementation of arms control and disarmament agreements and a chronology of events during the year in the area of security and arms control. Individual purchasers of the print edition will also be able to access the Yearbook online.