Analysts say although the 3 countries stressed the declaration was for regional peace and prosperity, a series of joint military maneuvers following the deadly artillery shelling between the DPRK and South Korea could in fact upset the region's stability.

Some experts even say the United States is using the Korean Peninsula tension to expand its military mighty in East Asia by strengthening military cooperation with Japan and South Korea.

Pyongyang regards military exercises by the 3 countries with genuine unease, fearing the maneuvers could be a smokescreen for a real attack.

Analysts predict the DPRK will take more drastic action if it continues to feel provoked.