The U.S. should ask Seoul to renounce support for the goal of inter-Korean confederation in order to frustrate Pyongyang's long-term desire to rule over the South, the academic and long-time Korea analyst B.R. Myers said on Tuesday.

North Korea is building nuclear weapons to compel a peaceful withdrawal of U.S. troops, subsequent breakup of the alliance, and eventual DPRK-led unification of the peninsula, Myers said in a Royal Asiatic Society presentation about what he described as Pyongyang's "unification drive."