There are also maps of which nations have troops right now in Afghanistan, which nations are experiencing wars at the moment, and which nations have recently been hit with missiles (most of them from drones).
Because the United States does things that other nations do not, there are a number of U.S.-specific maps. For example: Here are nations with U.S. troops permanently stationed in them. The interactive version will give you the details. The data is from the U.S. military:
The above does not include special forces or the CIA or drone strikes. The few gray nations without U.S. troops permanently in them stand out, including Iran and Syria. Should Greenland be worried?
We've also included a map of U.S. military actions since 1945. It has quite a bit of color on it.
And we've included a series of maps indicating some level of national interest in replacing war with the rule of law. While the International Criminal Court is seriously flawed, it might be improved by greater membership, particularly by major war makers. Here is which countries are now members:
Also available is a map of which nations are party to the long-forgotten treaty that bans war, known as the Kellogg-Briand Pact. That membership ought to be very surprising. There's also a map of which nations have ratified the Convention on Cluster Munitions banning the horrendously awful and murderous cluster bombs, a.k.a. flying landmines.
See if you find these maps useful, and let us know what you think is missing.
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