Kurdish Peshmerga forces celebrate Newroz Day, a festival marking spring and the new year, in Kirkuk March 20, 2017. REUTERS/Ako Rasheed - RTX31W8K

Iraqi Kurdish people carry fire torches up a mountain, as they celebrate Newroz Day, a festival marking their spring and new year, in the town of Akra, Iraq March 20, 2017. REUTERS/Ari Jalal - RTX31W9F

Afghan youth play on a swing during Newroz Day celebrations, a festival marking their spring and new year, in Kabul, Afghanistan March 21, 2017. REUTERS/Omar Sobhani - RTX31YPJ

A woman walks past a bonfire during a gathering celebrating Newroz, which marks the arrival of spring and the new year, in the Kurdish-dominated southeastern city of Diyarbakir, Turkey, March 21, 2017. REUTERS/Sertac Kayar - RTX320RQ

A woman carries flowers from an Iranian American food giveaway to homeless people on Skid Row to celebrate Nowruz, Iranian New Year, in Los Angeles, California, U.S., March 17, 2017. REUTERS/Lucy Nicholson - RTX31K9T

Iraqi Kurdish people carry fire torches up a mountain, as they celebrate Newroz Day, a festival marking their spring and new year, in the town of Akra, Iraq March 20, 2017. REUTERS/Ari Jalal - RTX31W9I

Image used for illustrative purpose. An Afghan man rides on his donkey, holding balloons for sale during Newroz Day celebrations, a festival marking their spring and new year, in Kabul, Afghanistan March 21, 2017. REUTERS/Omar Sobhani TPX IMAGES OF THE DAY - RTX31YQL

A Kurdish fighter from the People's Protection Units (YPG) takes part during a celebration for the spring festival of Nowruz, in the northeastern Syrian city of Qamishli near the Turkish border, Syria March 21, 2017. REUTERS/Rodi Said - RTX321WW

People gesture during a gathering celebrating Newroz, which marks the arrival of spring and the new year, in Istanbul, Turkey, March 21, 2017. REUTERS/Osman Orsal - RTX31ZT0

Iraqi Kurdish people carry fire torches up a mountain, as they celebrate Newroz Day, a festival marking their spring and new year, in the town of Akra, Iraq March 20, 2017. REUTERS/Ari Jalal TPX IMAGES OF THE DAY - RTX31W8X

An Afghan girl holds balloons during Newroz Day celebrations, a festival marking their spring and new year, in Kabul, Afghanistan March 21, 2017. REUTERS/Omar Sobhani - RTX31YPG

A Kurdish People's Protection Units (YPG) flag flutters as people celebrate the spring festival of Nowruz, in al-Darbasiyah town, on the Syrian-Turkish border, Syria March 21, 2017. REUTERS/Rodi Said - RTX321WY

Iranian American volunteer Marjan Vayghan, 32, (R) gives flowers to people on Skid Row after serving food to homeless people to celebrate Nowruz, Iranian New Year, in Los Angeles, California, U.S., March 17, 2017. REUTERS/Lucy Nicholson - RTX31KA1

Afghans gather during Newroz Day celebrations, a festival marking their spring and new year, in Kabul, Afghanistan March 21, 2017. REUTERS/Omar Sobhani - RTX31YOX

People gesture during a gathering celebrating Newroz, which marks the arrival of spring and the new year, in Istanbul, Turkey, March 21, 2017. REUTERS/Osman Orsal - RTX31ZTR

A girl carries a flag depicting jailed Kurdish leader Abdullah Ocalan of the Kurdistan Workers Party (PKK) during a celebration for the spring festival of Nowruz, in al-Darbasiyah town, on the Syrian-Turkish border, Syria March 21, 2017. REUTERS/Rodi Said - RTX321XA

Iranian American volunteer Marjan Vayghan, 32, (C) dances with people on Skid Row after serving food to homeless people to celebrate Nowruz, Iranian New Year, in Los Angeles, California, U.S., March 17, 2017. REUTERS/Lucy Nicholson TPX IMAGES OF THE DAY - RTX31K9F

Afghan families arrive at a shrine to celebrate their New Year (Nawroz) in Kabul, Afghanistan March 21, 2017. REUTERS/Omar Sobhani - RTX31YMA

People gesture during a gathering celebrating Newroz, which marks the arrival of spring and the new year, in Diyarbak?r March 21, 2017. REUTERS/Umit Bektas - RTX31ZR7

People gesture during a gathering celebrating Newroz, which marks the arrival of spring and the new year, in the Kurdish-dominated southeastern city of Diyarbakir, Turkey, March 21, 2017. REUTERS/Sertac Kayar - RTX320SJ

Kurdish Peshmerga forces celebrate Newroz Day, a festival marking spring and the new year, in Kirkuk March 20, 2017. REUTERS/Ako Rasheed - RTX31W8R

Iraqi Kurdish people celebrate Newroz Day, a festival marking their spring and new year, in the town of Akra, Iraq March 20, 2017. REUTERS/Ari Jalal - RTX31WB2

People gesture during a gathering celebrating Newroz, which marks the arrival of spring and the new year, in Diyarbak?r March 21, 2017. REUTERS/Umit Bektas - RTX31ZQU

People gesture during a gathering celebrating Newroz, which marks the arrival of spring and the new year, in the Kurdish-dominated southeastern city of Diyarbakir, Turkey, March 21, 2017. REUTERS/Sertac Kayar - RTX320T0