Stockholm International Peace Research Institute

Data cited at: Stockholm International Peace Research Institute (SIPRI)   The SIPRI Arms Transfers Database contains information on all transfers of major conventional weapons from 1950 to the most recent full calendar year. It is a unique resource for researchers, policy-makers and analysts, the media and civil society interested in monitoring and measuring the international flow of major conventional arms. For more information, see http://www.sipri.org/databases/armstransfers/sources-and-methods/

Data cited at: 'Information from the Stockholm International Peace Research Institute (SIPRI), https://sipri.org/media/press-release/2021/global-nuclear-arsenals-grow-states-continue-modernize-new-sipri-yearbook-out-now   SIPRI-World nuclear forces, January 2021 IPRISIPRI’s annual nuclear forces data shows that at the start of 2021, nine states—the United States, Russia, the United Kingdom, France, China, India, Pakistan, Israel and the Democratic People’s Republic of Korea (DPRK, or North Korea)—possessed approximately 13 080 nuclear weapons, of which 3825 were deployed with operational forces. Approximately 2000 of these are kept in a state of high operational alert.