As they say, third time's a charm. Or not. Korean fought three wars between the late 10th and early 11th centuries against what country?

The first of the three Goryeo-Khitan Wars was fought in 993 AD between the Liao dynasty of China and Korea. Two more would follow, with Khitan's goal being to take the Korean Peninsula. That goal was a bust. But that didn't stop Khitan from trying for many years to come, all of which failed as well. As Einstein said, "The definition of insanity is doing the same thing over and over again, but expecting different results.”

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