The call to convert is no rhetorical flourish; Islamic jurisprudence requires that non-believers be given a chance before they are attacked.

• 这种要求美国人皈依的呼声并不是只过过嘴瘾，根据伊斯兰法律，非伊斯兰教信仰者在遭到袭击前须给与一次皈依的机会。