the january 6 select committee officially subpoenas former president trump demanding documents and testimony. the move coming as trump ally steve bannon is sentenced to four months in prison for defying his subpoena. also tonight, president biden makes a new pitch to voters and a new prediction as well. he claims the momentum republicans are seeing will tilt back to the democrats in the final days before the midterm elections. and ukrainians removed last bodies from the largest mass grave found in a key eastern city. this as ukrainians is accusing russia of planning to attack a critical dam to create a large scale catastrophe. welcome to our viewers here in the united states and around the world. i m wolf blitzer and you re in the situation room. let s get right to our top story tonight. the january 6 select committee truly historic subpoena of former president donald trump. cnn justice correspondent evan perez is digging into details for us right any. so what is the