A senior US official on Friday raised the prospect of increasing US military deployments in Mindanao to confront Moro extremists who Washington says threaten regional stability. US Special Forces troops are known to deployed on a rotational basis in the Muslim southwestern portion of the former US colony. Although the 1987 Constitution bars them from actual combat, they have been providing intelligence, equipment, and training to elite troops combating extremist groups such as the Abu Sayyaf and their Jemaah Islamiyah allies from neighboring Indonesia. "We have a very good pace and rhythm of exercises. I think there may be...