(FILES) In this file photo North Korean leader Kim Jong Un attends a wreath-laying ceremony at a WWII memorial in the far-eastern Russian port of Vladivostok on April 26, 2019. - North Korean leader Kim Jong Un has made his first public appearance since speculation about his health began last month, cutting the ribbon at the opening of a fertilizer factory, KCNA reported on May2. (Photo by Kirill KUDRYAVTSEV / AFP)