Klaus-Dietmar Gabbert/EPA
  • A Turkish flag is projected onto the Brandenburg Gate in Berlin, Germany, June 29, 2016.
    Klaus-Dietmar Gabbert/EPA
  • Passengers walk past a blocked off area inside Ataturk Airport in Istanbul, Wednesday, June 29, 2016.
    AP
  • A bullet mark is pictured on a window at Istanbul's Ataturk Airport, June 29, 2016, a day after the suicide bombing and gun attack.
    Ozan Kose/AFP/Getty Images
  • Security officials stand at an entrance of Ataturk Airport in Istanbul, June 29, 2016.
    AP
  • People carry a coffin covered with Turkish national flag of suicide attack victim Hamidullah Safar, June 30, 2016, in Istanbul during his funeral two days after a suicide bombing and gun attack targeted Istanbul's airport.
    Ozan Kose/AFP/Getty Images
  • Relatives of an air hostess Gulsen Bahadir, killed during the Ataturk airport bombing, pray as they attend her funeral in Istanbul, June 29, 2016.
    Bulent Kilic/AFP/Getty Images
  • Relatives of Umut Sakaroglu, a customs officer at Ataturk Airport who was killed in the attacks, attend his funeral in Istanbul, June 29, 2016.
    Sedat Suna/EPA
  • The daughter (C) of Siddik Turgan, a man who was killed in Ataturk Airport attack, reacts as her father's coffin is carried nearby during his funeral ceremony, June 29, 2016, in Istanbul.
    Bulent Kilic/AFP/Getty Images
  • A Turkish anti-riot police officer (L) stands guard as people walk past the explosion site at the Ataturk International Airport arrival terminal in Istanbul, June 29, 2016.
    Outozan Kose/AFP/Getty Images
  • Broken windows are pictured in Ataturk airport's international arrivals terminal on June 29, 2016, a day after a suicide bombing and gun attack.
    Ozan Kose/AFP/Getty Images
  • Family members of victims cry outside the Forensic Medical Center in Istanbul, June 29, 2016.
    Emrah Gurel/AP Photo
  • Relatives of the Ataturk Airport suicide bomb attack victims wait outside Bakirkoy Sadi Konuk Hospital, in the early hours of June 29, 2016, Turkey.
    Defne Karadeniz/Getty Images
  • An injured woman is carried by paramedics into an ambulance outside Istanbul Ataturk Airport in Turkey, following a blast June 28, 2016.
    Goran Tomasevic/Reuters
  • People leave Istanbul Ataturk Airport in Turkey after a suicide bomb attack on June 28, 2016.
    Defne Karadeniz/Getty Images
  • Turkish police block the road as relatives wait outside the Turkey's largest airport, Istanbul Ataturk, following the suicide bomb attack, June 28, 2016.
    Mehmet Ali Poyraz/Getty Images
  • Turkish security officers gather outside Istanbul Ataturk Airport following a bombing attack, June 28, 2016.
    Mehmet Ali Poyraz/Getty Images
  • Passengers who survived the suicide bomb attack leave Turkey's largest airport, Istanbul Ataturk, June 28, 2016.
    Gokhan Tan/Getty Images
  • People walk away from Istanbul Ataturk Airport, Turkey, following a blast June 28, 2016.
    Goran Tomasevic/Reuters
  • Paramedics load ambulances at Istanbul Ataturk Airport, Turkey, following bomb attack, June 28, 2016.
    Osman Orsal/Reuters
  • Crime scene investigators work after an attack at Ataturk Airport in Istanbul, Turkey, June 28, 2016.
    Sedat Suna/EPA
  • The entrance to the Ataturk Airport in Istanbul is seen after an attack, June 28, 2016.
    DHA via AP
  • People stand on the road after an suicide bomb attack at Ataturk Airport in Istanbul, Turkey, 28 June 2016.
    Sedat Suna/EPA
  • Police investigators search the area after a suicide bomb attack at Ataturk Airport in Istanbul, Turkey, June 28, 2016.
    Sedat Suna/EPA
  • Turkish special force secure the area after a suicide bomb attack at Ataturk Airport in Istanbul, Turkey, June 28, 2016.
    Sedat Suna/EPA