WASHINGTON, Aug. 23, 2007 – Due to the sustained presence of coalition forces in former insurgent safe havens and increased capability of Iraqi security forces, levels of violence in Iraq are the lowest they’ve been since June 2006, an operational leader on the Joint Staff said today. (Video) Army Brig. Gen. Richard Sherlock, deputy director for operational planning for the Joint Chiefs of Staff, provides an operations update during a Pentagon news briefing Aug. 23, 2007. Photo by Petty Officer 2nd Class Molly A. Burgess, USN (Click photo for screen-resolution image);high-resolution image available. Army Brig. Gen. Richard Sherlock, deputy director...