see more

Japan's Emperor Akihito (R) and Empress Michiko (L) arrive at the national theatre to attend the Japan Prize ceremony in Tokyo on April 19, 2017. (Photo by Behrouz MEHRI / AFP) (Photo credit should read BEHROUZ MEHRI/AFP/Getty Images)

Japan's Emperor Akihito (R) and Empress Michiko (L) arrive at the national theatre to attend the Japan Prize ceremony in Tokyo on April 19, 2017. (Photo by Behrouz MEHRI / AFP)        (Photo credit should read BEHROUZ MEHRI/AFP/Getty Images)

see more

Japan's Emperor Akihito (L) and Empress Michiko (R) attend the Japan Prize ceremony at the national theatre in Tokyo on April 19, 2017. (Photo by Behrouz MEHRI / AFP) (Photo credit should read BEHROUZ MEHRI/AFP/Getty Images)

Japan's Emperor Akihito (L) and Empress Michiko (R) attend the Japan Prize ceremony at the national theatre in Tokyo on April 19, 2017. (Photo by Behrouz MEHRI / AFP)        (Photo credit should read BEHROUZ MEHRI/AFP/Getty Images)

see more

Japan's Emperor Akihito (L) and Empress Michiko (R) arrive at the national theatre to attend the Japan Prize ceremony in Tokyo on April 19, 2017. / AFP PHOTO / Behrouz MEHRI (Photo credit should read BEHROUZ MEHRI/AFP/Getty Images)

Japan's Emperor Akihito (L) and Empress Michiko (R) arrive at the national theatre to attend the Japan Prize ceremony in Tokyo on April 19, 2017. / AFP PHOTO / Behrouz MEHRI        (Photo credit should read BEHROUZ MEHRI/AFP/Getty Images)

see more

Japan's Emperor Akihito (C) and Empress Michiko (R) congratulate Adi Shamir of Israel (2nd R) after receiving the Japan Prize in the "electronics, information and communication" field, during a ceremony in Tokyo on April 19, 2017. Shamir was awarded the 33rd Japan Prize for his contributions to information security through pioneering research on cryptography. / AFP PHOTO / Behrouz MEHRI (Photo credit should read BEHROUZ MEHRI/AFP/Getty Images)

Japan's Emperor Akihito (C) and Empress Michiko (R) congratulate Adi Shamir of Israel (2nd R) after receiving the Japan Prize in the "electronics, information and communication" field, during a ceremony in Tokyo on April 19, 2017.
Shamir was awarded the 33rd Japan Prize for his contributions to information security through pioneering research on cryptography. / AFP PHOTO / Behrouz MEHRI        (Photo credit should read BEHROUZ MEHRI/AFP/Getty Images)