US President Barack Obama (R) and Japanese Prime Minister Shinzo Abe (L) hold a joint press conference following their visit to the USS Arizona Memorial (in background) in Pearl Harbour in Honolulu, Hawaii, USA on December 27, 75 years after Japan's attack on Hawaii in 1941. Abe is the first Japanese prime minister to visit the Arizona Memorial and the fourth to visit Pearl Harbour after World War II.  EPA/Bruce Omori