and we'll talk to marc ginsberg.irst up, this news update from c-span radio. >> it's 8:32 eastern time. comments this morning on the presidential election from former secretary of state colin powell. speaking earlier on nbc's "the today" show, he declined the endorsement he gave barack obama then a senator four years ago when he called president obama, "a transformational figure." he did credit the president with stabilizing the financial system and, "fixing" the auto industry, but he said he should have spent more time on the economy. as for mitt romney, colin powell calls him a viable candidate and says he's still listening to republican proposals. meanwhile, arkansas and kentucky hold their state and presidential primaries today. a total of 81 delegates are at stake in the g.o.p. president a.o.l. primary which is expected to bring mitt romney closer to the 1,144 delegates needed to clinch the g.o.p. nomination. mr. romney has 992 delegates, according to abc news. and the chief of the united nations nuclear agency,

caller: i want to say, bravo, marc ginsberg. i see that you have been very busy. this is exactly what is needed. i have long fought for over 10 years that media is the way to reach people before they are radicalized. it would help prevent them from becoming radicalized if they are aware of the other side. i wanted to say, have you tried to offer or show them the truth about radicalization? or are you trying this approach first? if everyone could sort of take a peek at that, i have also heard on british tv interviews with many arabs who are saying, wow. that is a wonderful. this dialogue of eight people and a variety of women speaking with the radicalized people and having a debate. that is exactly what we need to see all the sides and not just one. thank you guest:, first of all for your kind words. it is very much appreciated. we did a documentary called "back from the brink." was directed at the very heart of your question. how do we approach d radicale-i station? -- de-radicalization? we essentially confront the radical dogma whether it is gangs or muslim who a

martinsburg, who was ambassador to morocco in the 1990's -- will discuss middle east diplomacy marc ginsberg. eckstrom 1971-1973, president richard nixon secretly recorded his phone conversations and meetings. this weekend, you are more of the nixon tapes, saturday at 6:00 p.m., with conversations between the president and cia director richard helms, and also j. edgar hoover. >> i am going to make a statement about freedom of the press. my inclination is not to say so. [unintelligible] >> she should remain absolutely silent about it. >> we are straining at c-span radio.org. >> null form on how political campaigns use technology and how it has evolved since the first president critics and the first computer was used to predict the presidential election in 1952. this is an hour and 15 minutes. >> election 1952 introduced a new word, univac. the computer became famous overnight. many people here may remember the mere word became as synonymous with modern computing in the 1950's as the word google is to modern web searching today and you can see that in our exhibition. election nights are the sm