Jordan vows "earth-shaking" response after Islamic State shows burning of hostage

Islamic State militants released a video on Tuesday appearing to show a captured Jordanian pilot being burned alive in a cage, a killing that shocked the world and prompted Jordan to promise an "earth-shaking" response, Reuters reports. + The Jordanian government executed al-Qaida prisoners Sadjedah al-Rishawi and Ziyad al-Karbouli early Wednesday in retribution, a security official told the Associated Press. + The execution came just days after a video appeared to show the beheading of Japanese hostage Kenji Goto by an Islamic State militant.