The top two countries owing the most nuclear weapons in the world are Russia and the U.S. Among the European countries, France and the UK are the only countries with nuclear stockpiles. In the Middle East, Israel is the secretive nuclear power. North Korea is another secretive nuclear nation.
It is widely believed that owing nuclear weapons is a powerful deterrent against an invading country. This seems to be true as almost of all these countries have not been invaded by others.
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Source: Radio Free Europe/Radio Liberty Infographics
