A U.S. institute monitoring North Korea on Monday questioned Japanese Foreign Minister Taro Kono's recent remark that there are signs Pyongyang is preparing to conduct another nuclear test."Commercial satellite imagery from March 23 shows quite a different picture: namely, that activity at the test site has been significantly reduced compared to previous months," the U.S.-Korea Institute of Johns Hopkins University said on its 38 North website.Speaking in the western Japan city of Kochi on Saturday, Kono said North Korea appears to be "working hard to get ready for the next nuclear test," r…READ FULL ARTICLE