host: we are talking to jennifer crittendon, greg myre, husband and wife team. they understand you were just talking to secretary gates. guest: yes, secretary gates has a long history and relishes it with libya because he was debbie director of the cia -- deputy director of the cia, in the 1980's. he was definitely trying to caution against regime change in libya because he saw how difficult it was. one of the firm lines he has drawn is no grown troops in an african or middle eastern country. and he also cautioned the of the day on capitol hill that regime change often takes 10 years, as we have seen in iraq. host: we will go to andrew in florida. caller: i just want to make a quick comment about educational causes and university in the states. with the news media, how is it possible to be a more current events? when you came back to the states and went to a friend -- went to friends and family and tried to describe the situation, the older generations -- was in the older generations or the denver generations that could not complete? guest: i actually think that

thank you very much, greg myre and jennifer griffin. we appreciate it. >> that with jennifer griffin and greg myre, authors of "this burning land" who appeared on washington journal. for more information visit booktv.org. >> professor paul halliday, what is habeas corpus? >> habeas corpus is not only a writ which meant 300 years ago that it was a scrap of parchment that a judge sent to a jailer. ordering matt jailer to bring a named prisoner into his court and along with it what was called a return also had to be on parchment. explained why the jail was holding that prisoner. more than a scrap of parchment even 300 years ago and certainly today habeas corpus stands in our minds not only in lawyers's minds for the idea that no one should be held, constrained in any way against their will by someone else without the loss supervising that constrained in the person of a judge being sure it is okay. >> how did the concept of habeas corpus developed? >> i emphasize the liberal piece of parchment because really habeas corpus is a legal device