another lesson in less is more?

The US and South Korea are gearing up to show North Korea some military muscle - and North Korea is gearing up to throw some version of a temper tantrum in response.

At this time I'm giving the US State Department the benefit of the doubt that their planned military exercise will have some short or long-term positive impact on North and South relations, but now I'm having a hard time seeing it. I suspect, instead, that the US may be victim of the "do something" bias - that is, do something is better than doing nothing. But sometimes doing nothing is the better way to go.