., malory stewart, assistant secretary of state for arms control, talks about russia's work on a satellite that can carry a nuclear weapon. at 9 a.m. eastern on c-span two, the national press cb will offer an update on the status of journasts detained overseas. youan watch our live coverage on the c-span now video app or at c-span.org. ♪ >> do you solemnly swear that in the testimony you are about to give -- that the testimony you are about to give will be the truth so help you god? >> saturday, watch american history tv's congress investigates as we explore major investigations in our country's history about the u.s. house and senate. we will see historic footage from those periods and examine the impact and legacy of each hearing. this week, the 1975 senate committee hearings led by idaho democratic senator frank church over alleged abuses in the u.s. intelligence community. watch congress investigates saturdays at 7 p.m. eastern on c-span two. >> c-span is your unfiltered view of government. we are funded by these television companies and more, including mediacom. >> at mediacom, we bel