discussion on international terrorist threats against america and the western world. we'll hear about current challenges the u.s. is facing including homegrown violent extremism and returning foreign fighters. see that event live at 12:30 eastern on our companion network, c-span2. also today, remarks from president trump on u.s. policy toward cuba. he'll be in miami this afternoon. we expect him to be introduced by vice president mike pence along with him will be senator marco rubio and congressman carlos curbelo that all gets under way live at 1:00 p.m. eastern. afterwards we'll open our phone lines to get your reaction. the president has been tweeting this morning. he's quoted as saying, i'm being investigated by firing the f.b.i. director by the man who told me to fire the f.b.i. director, witch hunt this tweet derek spite the irony, the phony witch hunt going on in america the economic job numbers are great, regulations way down,

jobs and enthusiasm way up. >> this weekend on american history tv on c-span3. saturday, at 8:00 a.m. eastern on real america -- >> general secretary gorbachev if you seek peace if you seek prosperity for the soviet union and eastern europe, if you speak liberalization, come here to this gate, mr. gorbachev, open this gate. [applause] mr. gorbachev, tear down this wall. [cheers and applause] >> president ronald reagan's 1987 trip to berlin. then at 8:00 p.m. on lectures in history, hillsdale college professor pall moreno on how the baby boom, urbanization and the emergence of teen culture changed society.

>> you get a separate youth culture. advertisers are looking at this. young people begin to adopt their own style of dress, the kind of music they listen to is very different. there's a kind of segregation, separation of youth culture from mainstream culture. >> sunday at 8:00 p.m. eastern on the presidency. on the 45th anniversary of the watergate break-in, joe halederman offers an insider's iew into richard nixon's scandal. >> the white house phone rings, i instantly assume it's that dreaded call from nixon. the conversation is surprisingly brief. the president wants john and me to chopper up to meet him at camp david at 1:30 today. when the white house phone rings again, i fight to stay composed. that was ron ziegler, press secretary. he's at camp david too the

president now feels very strongly and john and i should volunteer to resign. >> for our complete american history tv schedule, go to -span.org. >> this weekend, booktv features a panel discussion on race in america on saturday at 5:15 p.m. eastern moderated by april ryan, washington bureau chief for american urban radio networks and author of "aunt norma's knee" and "the presidency in black and white." >> these two ladies here, i remember them marching for us, talking for us when we didn't have voices. basically let us know we count, we matter in a time when many of us are not at the table. what did shirley chisholm say if you don't have a seat at the table, bring a folding chair? >> also, mary francis berry,

author of "$5 and a pork chop sandwich." the awor of "they can't kill us all." and the author of "are we better off." winning pulitzer prize author david mckohl luff talks about his award winning collection of speeches. >> i began thinking a about the great presidents down the years who have been avid readers of history, many of them wrote history, including john kennedy. and even those who didn't have the benefit of a college education, like harry truman, read history all their lives. and realized that it's essential to the role of a leader whether it's the presidency or leadership of any kind.