A Somali police officer arrests a suspected rebel member of the al Qaeda-affiliated al Shabaab among beach goers in Mogadishu. Al Shabaab claimed responsibility for today's pre-dawn attack on a Kenyan university campus near the Somali border. The following gallery examines who is al Shabaab. Here: Somali police officer (R) arrests a suspected rebel member (L) of the Al Qaeda-affiliated al Shabaab among beach goers at the Lido beach north of Somalia's capital Mogadishu March 23, 2012. (Photo by Feisal Omar/Reuters)

In this Tuesday, July 29, 2014, photo, Syrian refugee Samah, 5, poses for a picture at Zaatari refugee camp, near the Syrian border, in Mafraq, Jordan. More than 2.8 million Syrian children inside and outside the country – nearly half the school-aged population – cannot get an education because of the devastation from the civil war, according to the U.N. children's agency, UNICEF. That number is likely higher, as UNICEF can't count the children whose parents didn't register with the United Nations refugee agency. (Photo by Muhammed Muheisen/AP Photo)

A man holds tasbih, or prayer beads, as he sits with a plate of food before breaking fast during the fasting month of Ramadan, at a roadside in Karachi, Pakistan on March 28, 2023. (Photo by Akhtar Soomro/Reuters)

A flock of sheep and goats is led by shepherds to pastures at a mountain village on the outskirts of Sana'a, Yemen, 27 July 2023. At least eight million sheep and goats from about 470,000 pastoralist and agro pastoralist households across Yemen will be treated and vaccinated over the two years 2023 and 2024, in an effort to reduce livestock losses, improve production efficiency, and household income generation amid an acute food insecurity, the UN Food and Agriculture Organization (FAO) has reported. (Photo by Yahya Arhab/EPA)

A camel is seen in front of the pyramids, which is one of the seven wonders of the world that was visited by 14.9 million tourists last year in Giza, Egypt on February 21, 2024. The pyramids were named after the tombs of fathers, sons and grandsons, including the largest pyramid Cheops (King Khufu), the middle pyramid Khafre (King Khafre) and the small pyramid Menkaure (King Menkaure). (Photo by Utku Ucrak/Anadolu via Getty Images)

An Afghan man rushes to the target with his horse as a Taliban fighter stands guard during a spear racing in the sprawling Chaman-e-Huzori park in downtown Kabul, Afghanistan, Friday, May 6, 2022. (Photo by Ebrahim Noroozi/AP Photo)

Members of the Indian Border Security Force (BSF) demonstrate their skills on motor-bikes during the BSF Golden Jubilee Day celebration in New Delhi on December 1, 2015. (Photo by Money Sharma/AFP Photo)

A Rohingya refugee woman is helped from a boat as she arrives exhausted on the Bangladesh side of the Naf River at Shah Porir Dwip after fleeing her village in Myanmar, on October 1, 2017 in Cox's Bazar, Bangladesh. (Photo by Kevin Frayer/Getty Images)