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

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

Turkish President Tayyip Erdogan addresses governors during a meeting in Ankara, Turkey, September 8, 2016. Yasin Bulbul/Presidential Palace/Handout via REUTERS