In video, actor and singer Idan Amedi seen speaking into communicator, dedicating detonation of target to October 7 attack victims

Hollywood icon was deeply moved by Ella Shani, 14, whose father was killed by Hamas and whose cousin was kidnapped into Gaza; Stone solemnly pledged to speak personally with the Red Cross: 'I will do everything I can to help'

Joined by participants from 100 locations around the world, families sing rendition pop icon’s 1989 hit in urgent call for release of loved ones held in Gaza