ROK ends live-fire drill amid inaction in DPRK

The ROK @ South Korea has reportedly ended its live-fire drill around Yeonpyeong island without any immediate reaction from North Korea that sank a ROK warship in the waters and shelled the island recently. Why did the DPRK not respond or react as it had 'threatened' earlier ? How would the ROK interpret the 'unexpected inaction' of the DPRK ? Propaganda ' war' between the ROK and DPRK is expected to continue. Meanwhile, brinkmanship seems to have been developed into a fairly fine art on the Korean Peninsula, as both sides are masters of it now.

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