The 20 deadliest conflicts in human history
 

http://img-s-msn-com.akamaized.net/t...6&q=60&o=f&l=fWe all hope it will never happen during our own lifetimesâ?? a massive regional or global war which sweeps us into its orbit, killing, displacing or destroying everything in its wake. The deadliest conflicts in history have killed tens of millions of people. Letâ??s look back at some of the worst.

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