North Korea's declaration it is freezing nuclear tests signals its seriousness about restoring the country's stagnating economy by improving relations with the United States, some analysts said."We will discontinue nuclear test and inter-continental ballistic rocket test-fire from April 21," the Workers' Party of Korea said in a resolution adopted Friday, adding North Korea will dismantle its main Punggye-ri nuclear test site in its northeast.This statement indicated that North Korean leader Kim Jong Un has decided to move toward denuclearization -- a breakthrough ahead of his planned histo…READ FULL ARTICLE