Mapping Arms Data: The Trade in Small Arms and their Ammunition, 1992-2011.
Absolutely fascinating, frightening, and beautiful data visualization project about current international activities around military arms. Hosted in Norway, with data compiled from over 37 sources. An impressive amount of work. Interactive, so click on a country to get more information. Check out Greenland. Even they are involved.
In their words:
"The Mapping Arms Data (MAD) visualization project is produced by PRIO and the Igarapé Institute. It represents an upgrade of the original global small arms, light weapons and ammunition visualization produced by Google as part of the Google Ideas INFO (Illicit Networks Forces in Opposition) Summit with support from the Igarapé Institute. MAD features over 35 000 records of the exports and imports of small arms and ammunition from more than 262 states and territories between 1992 and 2011."
Data from the Norwegian Initiative on Small Arms Transfers (NISAT):
Armed Conflict Data Catalogue: