Abu Dhabi police release video, announce arrest of suspect in murder of American teacher

Police in Abu Dhabi trumpeted their arrest of a suspect Thursday in the stabbing death of an American teacher with a slickly-produced video purportedly showing officers getting their instructions and racing through city streets to an opulent home where they executed a dramatic raid.

Monday's murder of Ibolya Ryan, 47, by a burka-clad assailant who lay in wait in a women's room at a mall shocked the oil-rich emirate where violent crime is rare. Ryan, the mother of twin 11-year-old boys, was a Romanian-born American citizen who trained as a...