I'm sorry, I don't understand your comment. You might mean one of two things: 1. There could be some confusion as to what is left undestroyed by 10%. I intende

I'm sorry, I don't understand your comment. You might mean one of two things: 1. There could be some confusion as to what is left undestroyed by 10%. I intended that figure to refer to the DPRK's tunnels, but especially the artillery capable tunnel mouths, not Seoul itself. 2. You may be employing a single definition of 'decimate', namely 'to take a tenth part of, tithe'. I doubt you mean the historical Roman practice of killing every tenth man, chosen by lot, of a legion. I kindly note that 'to destroy a large percentage of' is a a commonly accepted English usage of 'decimate'. It may be the most common usage, especially as knowledge of latin roots is not widespread.