A man looks at an electronic board showing the Japanese yen's exchange rate against Euro outside a brokerage in Tokyo, Japan, July 6, 2016. REUTERS/Issei Kato

Iraqi soldiers fire a rocket toward Islamic State militants on the outskirts of the Makhmour south of Mosul, Iraq, March 25, 2016. REUTERS/Azad Lashkaril

A New York Police Department (NYPD) robot retrieves an unexploded pressure cooker bomb on 27th Street, hours after an explosion nearby in New York City, New York, U.S. September 18, 2016. REUTERS/Lucien Harriot

Peru's President Pedro Pablo Kuczynski attends the opening ceremony of the Mistura gastronomic fair, which is promoting Peruvian cuisine by showcasing food and products from all over the country, in Lima, Peru, September 1, 2016. REUTERS/Guadalupe Pardo

U.S. President Barack Obama meets with Iraq Prime Minister Haider al-Abadi in New York, U.S. September 19, 2016. REUTERS/Kevin Lamarque

Iraqi Prime Minister Haider al-Abadi speaks during his meeting with U.S. President Barack Obama in New York September 19, 2016. REUTERS/Kevin Lamarque

U.S. President Barack Obama listens to remarks from Iraqi Prime Minister Haider al-Abadi during their meeting in New York September 19, 2016. Flanking Obama are Vice President Joe Biden and U.S. Ambassador to the UN Samantha Power. REUTERS/Kevin Lamarque

U.S. President Barack Obama meets with Iraqi Prime Minister Haider al-Abadi in New York September 19, 2016. REUTERS/Kevin Lamarque