Iraqi Kurdish refugees wait with children in Cukurca refugee camp in Turkey April 8, 1991. Reuters photographers have chronicled Kurdish refugee crises over the years. In 1991 Srdjan Zivulovic documented refugees in Cukurca who had escaped a military operation by Saddam Hussein's government in Iraq aimed at “Arabising” Kurdish areas in the north. Hundreds of thousands fled into Turkey and Iran. Images shot in recent months show familiar scenes as crowds of people flee Islamic State militants in Syria. There are as many as 30 million Kurds, spread through Turkey, Iraq, Syria and Iran. Most Kurds are Sunni Muslims, but tend to feel more loyalty to their Kurdishness, rather than their religion. (Photo by Srdjan Zivulovic/Reuters)

Military vehicles surround a wreckage of a trolleybus, in Volgograd, Russia, Monday, December 30, 2013. A bomb blast tore through a trolleybus in the city of Volgograd on Monday morning, killing at least 10 people a day after a suicide bombing that killed at least 17 at the city's main railway station. Volgograd is about 650 kilometers (400 miles) northeast of Sochi, where the Olympics are to be held. (Photo by Denis Tyrin/AP Photo)

A migratory bird picks her food as army soldiers are reflected in a fountain during rehearsals for the upcoming Republic Day parade at the Raisina hills, the government seat of power, in New Delhi, India, Monday, January 18, 2021. India celebrates Republic Day on Jan. 26, highlighted by a march past by different branches of the military as well as a display of arms and missiles. (Photo by Manish Swarup/AP Photo)

Members of the Indian Army display aerobatic Taekwondo skills during the 11th Reunion and 262nd Anniversary of Army Service Crops in Bangalore, India, 09 December 2022. The 11th ASC Reunion & 262nd Corps Day will be held at Army Service Corps (ASC) Centre & College on 8th and 9th of December 2022, to showcase the military capabilities. Indian Army Service Corps, established in 1760, is an arm of the Indian Army handling logistic support. (Photo by Jagadeesh N.V./EPA/EFE/Rex Features/Shutterstock)

Alien-themed decorations are seen at the Alien Research Center in Hiko, September 19, 2019. Scores of UFO enthusiasts converged on rural Nevada for a pilgrimage of sorts to the U.S. installation known as Area 51, long rumored to house government secrets about alien life, as law enforcement officials beefed up security around the military base. (Photo by Jim Urquhart/Reuters)

An all women team from Indian Border Security force displays their skill on a moving motorcycle during the rehearsal for the upcoming Republic Day parade at the Raisina hills, the government seat of power, in New Delhi, India, Thursday, January 20, 2022. India celebrates Republic Day on Jan. 26, highlighted by a march past by different branches of the military as well as a display of arms and missiles. (Photo by Manish Swarup/AP Photo)

A soldier supporting anti-government opposition groups carries a rocket-propelled grenade launcher on a street in the Fagah area of Mogadishu, Somalia Sunday, April 25, 2021. Gunfire was exchanged Sunday between government forces loyal to President Mohamed Abdullahi Mohamed, who signed into law on April 14 a two year extension of his mandate and that of his government, and other sections of the military opposed to the move and sympathetic to former presidents Hassan Sheikh Mohamud and Sharif Sheikh Ahmed. (Photo by Farah Abdi Warsameh/AP Photo)

An Israeli activist dressed as a clown runs around security forces as they arrest a protester near a police checkpoint at the entrance of the Sheikh Jarrah neighbourhood in east Jerusalem, on June 25, 2021. Tensions between Israel and Palestinians that lead to 11 days of military violence last month, initially flared in the Sheikh Jarrah neighbourhood where Israeli police cracked down on people protesting the planned expulsion of Palestinian families from their homes so Jewish settlers could move in. (Photo by Ahmad Gharabli/AFP Photo)