The year 2010 witnessed twists and turns on the Korean Peninsula. With strong DPRK policies，the relationship between the two countries started with frost and ended up with tremendous upheavals and tension. Intense confrontation rolled out on the Cheonan Incident and the“Northern Limit Line.”Possibilities of mitigation and cooperation still exist，which，however，can hardly rule out the possibilities that DPRK，with limited tolerance，would conduct drastic reactions if or when things turned out to be unsatisfying and hindering its development strategy，thus bringing new tension to the Peninsula.