REFILE – ADDING CITY North Korean leader Kim Jong Un shakes hands with Chinese President Xi Jinping, as he paid an unofficial visit to Beijing, China, in this undated photo released by North Korea’s Korean Central News Agency (KCNA) in Pyongyang March 28, 2018. KCNA/via Reuters ATTENTION EDITORS – THIS IMAGE WAS PROVIDED BY A THIRD PARTY. REUTERS IS UNABLE TO INDEPENDENTLY VERIFY THIS IMAGE.NO THIRD PARTY SALES. NOT FOR USE BY REUTERS THIRD PARTY DISTRIBUTORS. SOUTH KOREA OUT.NO COMMERCIAL OR EDITORIAL SALES IN SOUTH KOREA.