. >> lehrer: mark shields and michael gerson offer their analysis of the week's news. >> brown: and hari sreenivasan has the latest on a powerful computer virus that could be targeting nuclear facilities in iran. >>> there are lots of groups today that are now sitting planning how to make use of this kind of mechanism. >> lehrer: that's all ahead on tonight's newshour. major funding for the pbs newshour has been provided by: and with the ongoing support of these institutions and foundations. and... this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> brown: there was a changing of the guard at the white house today. president obama announced he's losing his chief-of-staff, rahm emanuel. he'll be succeeded by a long- time advisor, pete rouse. newshour correspondent kwame holman begins our coverage. ( applause ) >> holman: the president and his right-hand man were greeted with a standing ovation in the white house east room. more than 150 cabinet members and senior staffers were there for an

we'll see you on-line and again here tomorrow evening with mark shields and michael gerson sitting inor david brooks, among others. thank you and good night. major funding for the pbs newshour has been provided by: and with the ongoing support of these institutions and foundations. and... this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. captioning sponsored by macneil/lehrer productions captioned by media access group at wgbh access.wgbh.org