Indonesia's President Joko Widodo (R) walks with Japanese Crown Prince Naruhito (2nd R), while Indonesian First Lady Iriana (L) and Japanese Empress Michiko (2nd L) follow as they feed carps swimming in a pond at the Ninomaru garden at the Imperial Palace in Tokyo on March 23, 2015.  Widodo is on a four-day visit to Japan.    AFP PHOTO / POOL / Yoshikazu TSUNO        (Photo credit should read YOSHIKAZU TSUNO/AFP/Getty Images)