then joe papalardo reports on the air force's new weapon, disposal drones. watch the washington journal live at 7 eastern saturday morning. join the discussion. >> this weekend on american history tv on c-span3. saturday, at 8:00 a.m. eastern, on reel america. >> general secretary gorbachev, if you seek peace, if you seek prosperity for the soviet union and eastern europe, if you seek liberalization, come here to this gate. mr. gorbachev, open this gate. mr. gorbachev, tear down this wall. president ronald reagan's 1987 trip to berlin. then at 8:00 p.m. on lectures and history, paul morano on how the baby boom, and the emergence of teen culture changed post world war ii society. >> advertisers are looking at this. young people begin to adopt their own styles of dress, the kind of music they listen to is different. there's a kind of segregation, a separation of youth culture from mainstream culture. >> and sunday at 8:00 p.m. eastern on the presidency. on the 45th anniversary of the water gate break in, there's an insider's house into richard nixon's white ho