desolate colleague mark pittman -- late colleague mark pittman at the beginning of the crisis. >> henryt guy. he was not jumping around from one story to another. he was watching things slowly emerge. have a commitment about what he was saying. the news cycle is so short term now. >> i go back to the twitter vigilantes. >> there are no editors on twitter. we wanting of twitter, to bring in our twitter question of the day today. this speaks to run next question. what is the biggest opportunity for the u.s. in africa? tweet us. ♪ >> good morning, everyone. "bloomberg surveillance." tomorrow, my favorite guest will join us. sir martin sorrell. very thoughtful. so martin sorrell on that success which is the united kingdom economy. --k for that on television, television, tomorrow at 6:00 a.m. >> this is "bloomberg surveillance." our guest host for this hour, charles calomiris and hans humes . let's get you company news. new pressure on u.s. tech companies in china. may not buyanies antivirus software. china has ordered agencies not to buy microsoft's windows eight. microsoft is trying to mak