As Israel rained bombs on Lebanon, a group of anti-war campaigners in Derry, Northern Ireland watched the news in horror. It was 2006 and more than 1,100 Lebanese people had been killed over just 34 days. Then they discovered that a bunker buster bomb, dropped on the southern Lebanon village of Qana on 30 July 2006, had been guided by software made by arms giant Raytheon. It was time to act.

‘We couldn’t tolerate it any more,’ says Colm Bryce. ‘I just found it unbearable, sitting watching.’