we'll see the 1975 testimony of then cia director william colby, former senators walter mon dale and gary heart on intelligence oversight and rex bradford of the assassination archives and research center. tune in thursday at 8:00 p.m. eastern here on c-span3. >>> china and their approach to nuclear weapons is the focus of a panel hosted by the car nay gi endowment for international peace. we'll bring it to you live at 10:30 a.m. eastern here on c-span3. >>> that was president nixon's oval office address to the nation on august 8th, 1974. announcing his resignation from office in the aftermath of the watergate scandal. now from august 9th, his farewell speech to the white house staff. this is courtesy of the nixon presidential library and museum and is about 20 minutes. [ applause ] ♪ >>> ladan