World's most vulnerable people

A Syrian refugee reacts as he waits behind border fences to cross into Turkey at Akcakale border gate in Sanliurfa province, Turkey.

An injured girl is carried by a Nepal Army personnel to a helicopter following Saturday's earthquake in Sindhupalchowk, Nepal.

Displaced people from the minority Yazidi sect, fleeing violence from forces loyal to the Islamic State in Sinjar town, walk towards the Syrian border on the outskirts of Sinjar mountain near the Syrian border town of Elierbeh of Al-Hasakah Governorate August 11, 2014.

Ghazal, 4, (L) and Judy, 7, carrying 8-month-old Suhair, react after what activists said was shelling by forces loyal to Syria's President Bashar al-Assad near the Syrian Arab Red Crescent center in the Douma neighborhood of Damascus. The shelling happened during the visit by a Syrian Arab Red Crescent convoy to deliver medical aid to their center in Douma, activists aid.

A group of migrants protect themselves from the weather with emergency blankets as they huddle on the seawall at the Saint Ludovic border crossing on the Mediterranean Sea between Vintimille, Italy and Menton, France.

A man holds a baby that survived what activists said was a site hit by a barrel bomb dropped by forces loyal to Syrian President Bashar al-Assad at the old city of Aleppo.

Residents, with their belongings, return to their villages on a pickup truck after Kurdish People's Protection Units (YPG) fighters said that they retook control of the area from Islamic State in the southern countryside of Ras al-Ain.

A Syrian refugee woman from the northern Syrian town of Tel Abyad and her children wait while spending the day in Akcakale, in Sanliurfa province, Turkey.

A child's shoe is seen in the railway tracks in Atitalaquia, outskirts of Mexico City.

Girls who survived what activists said was a ground-to-ground missile attack by forces of Syria's President Bashar al-Assad, hold hands at Aleppo's Bab al-Hadeed district.

A Palestinian girl looks out of a tent erected near the remains of her family's house that witnesses said was destroyed by Israeli shelling during the 50-day war in the summer of 2014, on a rainy day in Beit Hanoun town in the northern Gaza Strip.

Displaced Sunni people, who fled the violence in the city of Ramadi, arrive at the outskirts of Baghdad.

Migrants from Afghanistan walk after they crossed the border from Serbia to Hungary, near the village of Asotthalom.

Afghan immigrants land at a beach on the Greek island of Kos after crossing a portion of the south-eastern Aegean Sea between Turkey and Greece on a dinghy.

Hla Hla Myint, a victim of recent violence with a head gunshot wound, rests in a bed at a hospital in Kyuktaw township. Hundreds of homes burned and gunfire rang out as sectarian violence raged between Rohingya Muslims and Buddhists in western Myanmar.