he wrote the book after a three-year stint at soloman brothers.ear he published "flash boys" who helped us all understand what wall street is up to these days. i asked him to come in and give us his own update. you were still part of a wall street where the stuff that was happening, the action was human relationships and people and now it's computer. >> moving that way. markets becoming automated, light speed. people program the machine. so it's the person running logic, creating rules for how this thing is going to trade. yes, wall street in "liar's poker" is still wall street shouting in telephones at people. it's getting complicated but still comprehensible. that's one thing, how much harder it's gotton explain. it was a bit of a struggle to explain what a mortgage bond was, that was a new thing. but collateralized debt obligation or high frequency trading program is so much harder. >> there seems to me there's two sort of different trends here. on the one hand technology is disintermediatiating people in the middle that collect fees wall stree

leaders from across arab are there and king soloman said houthis are a grave threat to security across region. >> translator: these houthi malitias and by foreign forces were able to subvert the government and take control of the state and institutions turning a blind eye to all the calls initiated by the gulf countries and continue with the hostile actions against yemen people and authority posing a threat to regional countries. >> reporter: yemen's president says the military campaign is meant to protect the yemen people and haidi is attending summit in egypt and called on houthis to surrender. >> translator: i am adamant to continue to exercise my authorities as the president. i call on all the yemen people to continue to back and support the legitimate authority of yemen and the state institutions and to join forces to stand up to those malitias to take to the streets and peacefully demonstrate suppressing their free will. >> reporter: qatar told the arab league meanwhile all sides in yemen should negotiate for the good of the people and also said there was no military solution to