Citing a government official on the matter
The KRW is the leader on the day on the Asian board against the US dollar.
It's not the first time this year that South Korean officials are verbally intervening in markets as they have already done so earlier in the month here and here (actually intervening).
![](http://az705044.vo.msecnd.net/20180125/25-1-2018-11-50-04-am.png)
Asian currencies' performance against the US dollar so far today