By By DAN LAMOTHE The Washington Post BAGHDAD -- The Pentagon is deploying U.S. military advisers closer to the front lines in the campaign against the Islamic State as Iraqi security forces wrestle for control of the city of Mosul, the top U.S. commander here said Monday. Army Lt. Gen. Stephen Townsend said that the advisers, numbering about 450, are "operating closer and deeper into Iraqi formations" as a new assault on western Mosul gets underway.