Jordan vowed a response to the apparent burning death of fighter pilot Muath al-Kaseasbeh. The U.S. ally will execute ISIS prisoners, Reuters reports, including female suicide bomber Sajida al-Rishawi.
"The revenge will be as big as the calamity that has hit Jordan," said Jordanian Army spokesman Colonel Mamdouh al Ameri in a statement, The Jerusalem Post reports.
King Abdullah of Jordan was in Washington Tuesday, where he is expected to meet with President Barack Obama. His scheduled trip was cut short.
"Lieutenant al-Kaseasbeh’s dedication, courage, and service to his country and family represent universal human values that stand in opposition to the cowardice and depravity of ISIL," Obama said in a statement.
Jordan had been negotiating to trade al-Rishawi for al-Kaseasbeh, who was captured in December. Instead, the Islamic State released a video Tuesday that appeared to show al-Kaseasbeh being burned alive.
Two days earlier, a video appeared to show the beheading death of Japanese journalist Kenji Goto.
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Gavin Stern is a national digital producer for the Scripps National Desk.