11.   The next president, whoever that may be, ought to think creatively about these issues and exert some leadership to alleviate the congestion in the skies.

12.   We have to believe that the much-maligned Newt Gingrich, had he continued to function as speaker, would have exerted statesmanlike leadership.

13.   Local reports said more Cabinet changes could be forthcoming as the president grapples with charges he needs to exert stronger leadership amid the economic crisis.

14.   That is particularly noticeable in foreign affairs where, unable to exert political leadership in their own backyard, they often find themselves outflanked by the United States.

15.   The agreement represented an early victory for Clinton as he seeks to exert his leadership with a Congress now controlled by Republicans.