Japanese Prime Minister Shinzo Abe speaks during a Reuters Newsmaker conversation in Manhattan. REUTERS/Andrew Kelly

Chinese Premier Li Keqiang delivers remarks during a meeting with former New York City Mayor Michael Bloomberg and U.S. business leaders at the Waldorf Astoria Hotel during the week of the United Nations General Assembly in Manhattan, New York, U.S., September 20, 2016. REUTERS/Andrew Kelly

Chinese Premier Li Keqiang delivers remarks during a meeting with former New York City Mayor Michael Bloomberg and U.S. business leaders at the Waldorf Astoria Hotel during the week of the United Nations General Assembly in Manhattan, New York, U.S., September 20, 2016. REUTERS/Andrew Kelly

Chinese Premier Li Keqiang speaks during a High Level Leaders meeting on Refugees on the sidelines of the United Nations General Assembly at United Nations headquarters in New York, U.S. September 20, 2016. REUTERS/Brendan McDermid

Rome's mayor Virginia Raggi gestures during a news conference in Rome, Italy June 20, 2016. REUTERS/Remo Casilli

Chinese Premier Li Keqiang sits during a meeting with former New York City Mayor Michael Bloomberg for a dialogue with U.S. business leaders at the Waldorf Astoria Hotel during the week of the United Nations General Assembly in Manhattan, New York, U.S., September 20, 2016. REUTERS/Andrew Kelly

Former Afghan Prime Minister Gulbuddin Hekmatyar speaks to a Reuters correspondent in Tehran Febuary 5, 2002. REUTERS/Caren Firouz (IRAN)

Congolese opposition supporters chant slogans as they destroy the billboard of President Joseph Kabila during a march to press the President to step down in the Democratic Republic of Congo's capital Kinshasa, September 19, 2016. REUTERS/Kenny Katombe