A group of Southern Baptist missionaries working in Muslim countries has asked the U.S. leaders of their denomination to tone down their harsh criticism of Islam for safety reasons. The missionaries said denigrating Islam puts them at risk as they work to spread Christianity under dangerous conditions overseas. On Dec. 30, a suspected Islamic militant killed three workers at a Southern Baptist hospital in Yemen -- the latest in a series of attacks over the last year on American religious workers abroad. "We are not sure if you are aware of the ramifications that comments that malign Islam and Muhammad...