Stockholm International Peace Research Institute

'Information from the Stockholm International Peace Research Institute (SIPRI), https://www.sipri.org/databases/armstransfers'   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/

'Information from the Stockholm International Peace Research Institute (SIPRI), 'https://www.sipri.org/databases/armsindustry'   The SIPRI Arms Industry Database contains information on arms-producing and military services. It includes public and private companies, but not manufacturing or maintenance units of the armed services. The database contains financial data and employment data for arms-producing companies in the OECD and developing countries (except China) based on open sources. Sources include company annual reports and articles in journals and newspapers. Estimates of arms sales are made on the basis of open information. The SIPRI Arms Industry Database was initiated in 1989. At that time it excluded data for companies in Eastern European countries, including the Soviet Union. However, the current version contains data from 2002, including data for companies in Russia.

'Information from the Stockholm International Peace Research Institute (SIPRI), https://www.sipri.org/databases/milex'   The SIPRI Military Expenditure Database contains consistent time series on the military spending of countries for the period 1949–2017. The database is updated annually, which may include updates to data for any of the years included in the database. Military expenditure in local currency at current prices is presented according to both the financial year of each country and according to calendar year, calculated on the assumption that, where financial years do not correspond to calendar years, spending is distributed evenly through the year. Figures in constant (2016) and current US $, as a share of GDP and per capita are presented according to calendar year. Figures as a share of government expenditure are presented according to financial year. The availability of data varies considerably by country, but for a majority of countries that were independent at the time, data is available from at least the late 1950s. Estimates for regional military expenditure have been extended backwards depending on availability of data for countries in the region, but no estimates for total world military expenditure are available before 1988 due to the lack of data for the Soviet Union.

'Information from the Stockholm International Peace Research Institute (SIPRI), https://www.sipri.org/media/press-release/2018/modernization-nuclear-weapons-continues-number-peacekeepers-declines-new-sipri-yearbook-out-now'   SIPRI - Trends in world nuclearforces, 2018 IPRISIPRI’s annual nuclear forces data shows that while the overall number of nuclear weapons in the world continues to decline, all of the nuclear weapon-possessing states are maintaining and modernizing their nuclear arsenals. At the start of 2018 nine states—the United States, Russia, the United Kingdom, France, China, India, Pakistan, Israel and the Democratic People’s Republic of Korea (North Korea)—possessed approximately 14 465 nuclear weapons.