From a religious point of view saying no would limit God's creational ability. Personally I kind of doubt it. If we are the only ones in the entire universe it shows

You how special and unique our life is which makes it even more of a shame how so many think so little of life.I wonder if we were made aware how special those of us on this planet are if it would make a difference but it would probably make the Muslims even more radical to convert everyone by the sword.
Don't give me this shit that most Muslims are peaceful, the entire Middle East would love to convert the world by the Sword and if they had the bomb they not hesitate to drop it on England, the US and any other Western country they could reach. With the deal Obama made with Iran it may be sooner than we think. North Korea would love to help out, not for Islam, but for Chaos. Perhaps their tech will Will not allow them to do so but they would do in a heartbeat..