Britain's Prince Charles urged religious leaders to encourage followers to respect those of other faiths, drawing on the current persecution of Christians in the Middle East as an example where that respect is lacking.
Charles spoke in a video aired on Tuesday to accompany a report by the Catholic charity Aid to the Church in Need.
"It is an indescribable tragedy that Christianity is now under such threat in the Middle East," he said.
Islamic State fighters drove Christians from Iraq's northern city of Mosul in July, ending a presence stretching back to the early years of Christianity. The Sunni Islamist group has also targeted Shi'ite Muslims and religious minorities, executing hundreds of captives in Iraq and neighbouring Syria. [Reuters] Read more