hostages

TOPSHOTS Umbrellas protect condolence bo...TOPSHOTS Umbrellas protect condolence books for victims of the siege at the Lindt Cafe where three people, including the lone gunman, died in December 2014, from the rain before being signed by visiting British foreign and defence secretaries in Sydney on February 2, 2015. The visit to the site was held ahead of annual Australia-UK security talks. AFP PHOTO / Peter PARKSPETER PARKS/AFP/Getty Images

Peter Parks/AFP

Umbrellas are used to protect condolence books for victims of the siege at the Lindt Cafe in Sydney before they are signed by visiting British foreign and defence secretaries on Monday. Three people, including the lone gunman who took 17 hostages during the siege, died in December. The visit to the site was held ahead of annual Australia-UK security talks. 

Kenya security forces are seen behind a wall outside the Westgate Mall in Nairobi, Kenya Monday morning, Sept. 23, 2013. Kenya's military launched a major operation at the upscale Nairobi mall and said it had rescued "most" of the hostages being held captive by al-Qaida-linked militants during the standoff that killed at least 68 people and injured 175.

Jerome Delay/AP

Members of Kenya’s security forces crouch behind a wall outside the Westgate Mall in the capital, Nairobi, on Monday morning. The country’s military, which has launched a major operation at the upscale Nairobi mall, said it had rescued “most” of the hostages being held captive by al-Qaida-linked militants during the standoff that killed at least 68 people and injured 175.