Coming Up on This Week with George Stephanopoulos

This Sunday, George talks with Defense Secretary Robert Gates about the Georgia crisis and its impact on U.S.-Russian relations.

Then, in an exclusive interview, Former Governor Mitt Romney (R-MA), a McCain supporter, and Former Senator Tom Daschle (D-SD), an Obama supporter, discuss the 2008 campaign.

On the "Roundtable," E.J. Dionne of the Brookings Institution, Michael Gerson of the Council on Foreign Relations, and ABC New's Jan Crawford Greenburg and George Will join George to debate the week's politics.