Left hand: What is the right hand doing?

There is an interesting pair of articles in the Korea Times. On the 2nd, there is a brief report that the Canal project may be revived (background on the canal here, here, here,...) Two days later, reports of a North Korean dam affecting water flow in the Han River are described.

Boy, there's an angle I hadn't even considered; the canal is clearly a bad idea for financial, environmental and agricultural reasons - but it is also susceptible to sabotage by the Norks?