When reading the lives of the saints I cant help but notice how many of our Christian martyrs were tortured and killed by Muslims, according to Josiah Trenham he says Islam historically is the greatest threat to Christianity, not theologically but through persecution. For those who dont know, half of the Christian lands while Mohammad was alive were conquered with the sword under Islam, thats how much violence they bring against the church, here is a little clip of father Josiah Trenham talking about the current persecution on Syria.