Increased sectarian violence, hurdles developing local police forces and delays in establishing an effective Iraqi government mean it is unlikely the United States will cut the number of troops in Iraq before the summer as previously anticipated, according to Gen. John Abizaid, commander of U.S. Central Command. At a breakfast with reporters today in Washington, the Army four-star said current U.S. troop levels in Iraq -- now at over 140,000 -- will likely be sustained "though the springtime" before they...