The Pentagon's point man for overseas arms sales has a new responsibility -- overseeing the management of the Defense Department's regional centers for security studies. Gordon England, acting deputy defense secretary, has tapped the director of the Defense Security Cooperation Agency -- an arm of the Pentagon's policy shop -- to be executive agent for DOD's five regional security studies centers. Effective Oct. 1, Air Force Lt. Gen. Jeffrey Kohler is responsible for overseeing the programming, budgeting and financial management...