Japan's Prime Minister Shinzo Abe arrives at the Jose Marti International Airport in Havana, Cuba, September 22, 2016. REUTERS/Alexandre Meneghini

Japan's Prime Minister Shinzo Abe (C), talks to Cuban authorities upon his arrival at the Jose Marti International Airport in Havana, Cuba, September 22, 2016. REUTERS/Alexandre Meneghini

Cuban and Japanese flags are displayed on top of the airplane bringing Japan's Prime Minister Shinzo Abe upon his arrival at the Jose Marti International Airport in Havana, Cuba, September 22, 2016. REUTERS/Alexandre Meneghini

Japan's Prime Minister Shinzo Abe (C), talks to Salvador Antonio Valdes Mesa, member of the Political Bureau of the Central Committee of the Communist Party of Cuba (CPC) and vice-president of the Council of State of Cuba (L) upon his arrival at the Jose Marti International Airport in Havana, Cuba, September 22, 2016. REUTERS/Alexandre Meneghini

A man drives a moto-taxi past a billboard of Nicaragua's President Daniel Ortega in Managua, Nicaragua September 19,2016. REUTERS/Oswaldo Rivas

A view of an oil refinery off the coast of Singapore March 14, 2008. REUTERS/Vivek Prakash/File Photo

Protesters shout for the videos of the shooting from the steps of the police station during another night of protests over the police shooting of Keith Scott in Charlotte, North Carolina, U.S. September 22, 2016. REUTERS/Mike Blake

A rally celebrating the success of a recent nuclear test is held in Kim Il Sung square in this undated photo released by North Korea's Korean Central News Agency (KCNA) in Pyongyang September 13, 2016. KCNA/via Reuters