Iran's Foreign Minister Mohammad Javad Zarif (R) talks with his Ecuadorean counterpart Guillaume Long during a meeting in Quito, on August 24, 2016. Zarif, who is travelling with a large delegation of officials and business executives, made Ecuador the third stop of a Latin American tour that began on Monday in Cuba, was followed by Nicaragua and which also includes, Venezuela, Bolivia and Chile. / AFP PHOTO / JUAN CEVALLOSJUAN CEVALLOS/AFP/Getty Images

(FILES) This file photo taken on January 5, 2016 shows a Best Buy sign outside a store location in Woodbridge, Virginia. US stocks edged higher Agust 24, 2016, but the tone of trade remained cautious ahead of Federal Reserve Chair Janet Yellen's speech on the economy at the end of the week. Electronics retailer Best Buy grabbed the most attention, rocketing 19.4 percent after its second quarter profits handily beat forecasts and the company boosted its outlook for the rest of the year. / AFP PHOTO / SAUL LOEBSAUL LOEB/AFP/Getty Images

Iran's Foreign Minister Mohammad Javad Zarif (L) speaks to the press as his Ecuadorean counterpart Guillaume Long looks on, in Quito, on August 24, 2016. Zarif, who is travelling with a large delegation of officials and business executives, made Ecuador the third stop of a Latin American tour that began on Monday in Cuba, was followed by Nicaragua and which also includes, Venezuela, Bolivia and Chile. / AFP PHOTO / JUAN CEVALLOSJUAN CEVALLOS/AFP/Getty Images

Iran's Foreign Minister Mohammad Javad Zarif (L) and Ecuador's President Rafael Correa are pictured before holding a meeting at the Carondelet presidential palace in Quito, on August 24, 2016. Zarif, who is travelling with a large delegation of officials and business executives, made Ecuador the third stop of a Latin American tour that began on Monday in Cuba, was followed by Nicaragua and which also includes, Venezuela, Bolivia and Chile. / AFP PHOTO / Juan CEVALLOSJUAN CEVALLOS/AFP/Getty Images

Iran's Foreign Minister Mohammad Javad Zarif (L) and Ecuador's President Rafael Correa are pictured before holding a meeting at the Carondelet presidential palace in Quito, on August 24, 2016. Zarif, who is travelling with a large delegation of officials and business executives, made Ecuador the third stop of a Latin American tour that began on Monday in Cuba, was followed by Nicaragua and which also includes, Venezuela, Bolivia and Chile. / AFP PHOTO / Juan CEVALLOSJUAN CEVALLOS/AFP/Getty Images

Iran's Foreign Minister Mohammad Javad Zarif (L at centre) holds a mwwting with Ecuador's President Rafael Correa (C at right) at the Carondelet presidential palace in Quito, on August 24, 2016. Zarif, who is travelling with a large delegation of officials and business executives, made Ecuador the third stop of a Latin American tour that began on Monday in Cuba, was followed by Nicaragua and which also includes, Venezuela, Bolivia and Chile. / AFP PHOTO / JUAN CEVALLOSJUAN CEVALLOS/AFP/Getty Images

Iran's Foreign Minister Mohammad Javad Zarif (L) is welcomed by Ecuador's President Rafael Correa at the Carondelet presidential palace in Quito, on August 24, 2016. Zarif, who is travelling with a large delegation of officials and business executives, made Ecuador the third stop of a Latin American tour that began on Monday in Cuba, was followed by Nicaragua and which also includes, Venezuela, Bolivia and Chile. / AFP PHOTO / JUAN CEVALLOSJUAN CEVALLOS/AFP/Getty Images

Iran's Foreign Minister Mohammad Javad Zarif (L) shakes hands with Ecuador's President Rafael Correa at the Carondelet presidential palace in Quito, on August 24, 2016. Zarif, who is travelling with a large delegation of officials and business executives, made Ecuador the third stop of a Latin American tour that began on Monday in Cuba, was followed by Nicaragua and which also includes, Venezuela, Bolivia and Chile. / AFP PHOTO / JUAN CEVALLOSJUAN CEVALLOS/AFP/Getty Images