.- pakistan relationship with npr's steve inskeep, just back from a reporting trip. this is a discussion in pakistan. are we really an independent country or just doing what the united states tells does to do. >> ifill: we look at the pentagon papers, 40 years after the secret study on the escalation of the vietnam war was leaked to the "new york times." >> brown: and former supreme court justice john paul stevens talks about his years on the bench and the shifting dynamics of the court. >> everything has changed over the years. my own view is that there's been a change on the court every time a new member has been appointed. >> ifill: that's all ahead on tonight's newshour. major funding for the pbs newshour has been provided by: >> oil companies have changed my country. >> oil companies can make a difference. >> we have the chance to build the economy. >> create jobs, keep people healthy, and improve schools. >> ...and our communities. >> in angola chevron helps train engineers, teachers and farmers, launch child's programs. it's not just good business. >> i'm hope