Saudi King Salman, Iraqi Prime Minister Haider al-Abadi, and U.S. Secretary of State Rex Tillerson attend a meeting of the Saudi Arabia-Iraq Coordination Council in Riyadh on Oct. 22. (Alex Brandon/AFP/Getty Images)
ERBIL, IRAQ - SEPTEMBER 21: Kurdish people show their support for the upcoming referendum for independence of Kurdistan at a rally on September 21, 2017 in Erbil, Iraq. The Kurdish Regional government is preparing to hold the September 25, independence referendum despite strong objection from neighboring countries and the Iraqi government, which voted Tuesday to reject Kurdistan's referendum and authorized the Prime Minister Haider al-Abadi to take measures against the vote. Despite the mounting pressures Kurdistan President Masoud Barzani continues to campaign and state his determination to go ahead with the vote. (Photo by Chris McGrath/Getty Images)
CAIRO, EGYPT - FEBRUARY 01: A youth waves Egyptian flags from a lamp post in Tahrir Square on February 1, 2011 in Cairo, Egypt. The Egyptian army has said it will not fire on protestors as they gather in large numbers in central Cairo. (Photo by Peter Macdiarmid/Getty Images)
Iraqi Kurds wave the Kurdish flag as they celebrate in the streets of the northern city of Arbil on September 25, 2017 following a referendum on independence.
Iraq's Kurds defied widespread opposition to vote in a historic independence referendum, sparking fresh tensions with Baghdad, threats from Turkey and fears of unrest. / AFP PHOTO / Safin HAMED (Photo credit should read SAFIN HAMED/AFP/Getty Images)
SANLIURFA, TURKEY - OCTOBER 28: (TURKEY OUT) Kurdish refugee children from the Syrian town of Kobani look on near makeshift tents in a camp in the southeastern town of Suruc, Sanliurfa province October 28, 2014. Kurdish fighters, supported by US-led air strikes, have fended off the Islamic State militants offensive into the besieged Syrian border town of Kobani for the last 44 days but remain ill equipped and short on ammunition. (Photo by Kutluhan Cucel/Getty Images)
TOPSHOT - Iraqi Kurds fly Kurdish flags during an event to urge people to vote in the upcoming independence referendum in Arbil, the capital of the autonomous Kurdish region of northern Iraq, on September 16, 2017. / AFP PHOTO / SAFIN HAMED (Photo credit should read SAFIN HAMED/AFP/Getty Images)