Iran does seem dangerous to me. (So does the U.S., for that matter.)
I am not quite up-to-date, with the news, about Syria and Korea.
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It would be nice if everyone in the world would just "all get along." That has never happened, so one has to believe it never will. If that is true, then it behooves us to be prepared for armed conflict, or even long range nuclear attacks. This guy in Iran is dangerous and bears watching, as do the other countries you listed.>
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>From the Washington Post:
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Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)