Mourners pray during a ceremony for Jordanian pilot Muath al-Kaseasbeh, who was killed by the Islamic State after he was captured in December. At Wednesday's service, which took place in the city of Karak, mourners called for the destruction of ISIS. Khalil Mazraawi/AFP/Getty hide caption
A frame grab from a video released by the Islamic State shows an IS militant holding a knife before purportedly executing British aid worker David Cawthorne Haines. Islamic State Video/EPA /LANDOV hide caption
A man in Kano, Nigeria, reads a local newspaper Sunday that carries a story about the killing of seven hostages by a militant group. Sunday Alamba/AP hide caption
Thursday night in Midland City, Ala., there was a candlelight vigil for bus driver Charles Poland, who was killed Tuesday before a gunman snatched a 5-year-old boy — who is being held captive in an underground bunker. Philip Sears/Reuters /Landov hide caption
Islamist militants raided the In Amenas natural gas field (pictured) in Algeria on Wednesday and took several hostages. BP/AP hide caption