Countries Impossible to Invade
Which countries would be the hardest to invade? When it comes to defense, some countries are just safer than others. From nations with massive militaries to states with unavailable terrain, we’re counting down the 10 Countries That Would Be Impossible To Invade. And, yes, the United States is one of the 10, but so is North Korea, so the rising tensions between the two might well lead to a stand-off.
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