Japan and Australia agreed Wednesday to keep up pressure on North Korea to denuclearize through the strict enforcement of U.N. sanctions on Pyongyang, despite easing tensions over its arms development program.The foreign and defense ministers of the two countries, in their talks in Sydney, also acknowledged the need to strengthen defense ties, including increasing joint exercises by their armed forces, amid a rapidly changing security environment in the region.The ministers welcomed North Korea's diplomatic engagement started this year with South Korea and the United States, which has led t…READ FULL ARTICLE