Indonesia's President Joko Widodo (C) and his wife Iriana (3rd R) with Japanese Crown Prince Naruhito (2nd L), Prince Akishino (L) and Empress Michiko (R) 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)