Coming Up on This Week with George Stephanopoulos

— -- This Sunday U.S. Sec. of Defense Robert Gates joins George to discuss the Petraeus report to Congress on the effectiveness of the troop surge, the future of Iraq, and President Bush's speech on troop withdrawal.

Then, in a Sunday exclusive, Sen. Jack Reed, D-R.I., a member of the Armed Services Committee provides the Democratic response to the president's address to the nation, Sec. Gates' comments, and the Iraq progress reports delivered on Capitol Hill this week.

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And on our "Roundtable," Thomas Friedman of the New York Times, Newseek's Fareed Zakaria, and ABC News' Martha Raddatz and George Will.