A British flag and an EU flag are seen in front of a monitor displaying a graph of the Japanese yen's exchange rate against the U.S. dollar at a foreign exchange trading company in Tokyo, Japan, June 27, 2016. REUTERS/Toru Hanai

Shipping containers are seen unloaded at a port area in Lianyungang, Jiangsu province, China, August 8, 2016. China Daily/via REUTERS

People look at an electronic board showing the graph of the recent fluctuations of market indices at the floor of Brazil's BM&F Bovespa Stock Market in downtown Sao Paulo, Brazil, May 9, 2016. REUTERS/Paulo Whitaker/File photo

A sign is seen at an AstraZeneca site in Macclesfield, central England May 19, 2014. REUTERS/Phil Noble

The Philadelphia Energy Solutions oil refinery owned by The Carlyle Group is seen at sunset in front of the Philadelphia skyline March 24, 2014. REUTERS/David M. Parrott/File Photo

An aerial photo taken though a glass window of a Taiwanese military plane shows the view of Itu Aba, which the Taiwanese call Taiping, at the South China Sea, March 23, 2016. REUTERS/Ministry of Foreign Affairs/Handout via Reuters/File Photo

Passengers wait to board a train at a railway station in New Delhi, India, February 25, 2016. REUTERS/Anindito Mukherjee

Passengers travel in an overcrowded train near a railway station at Loni town in the northern state of Uttar Pradesh, India, February 23, 2016. REUTERS/Anindito Mukherjee