let's start at the white house, and cnn mj lee. mj, the president ask german chancellor were clearly hoping to put on a united front today but seemed to disagree on the critical nord stream 2 pipeline, which would allow russia to export natural gas to germany by passing ukraine. president biden was forceful saying the pipeline would not go forward in the event of a russian invasion but the u.s. does not oversee the project. so, how exactly would that work? >> yeah, john, it is very clear after today that this pipeline is going to remain a major sticking point as you said when president biden was asked about this, he specifically said if russia were to invade ukraine, that this pipeline would be no more. i should note, though, that when he was pressed, well, how can the u.s. do that? he didn't get into specifics. he just said, well, i promise you that this is possible. and then, in real contrast, the german chancellor when he was asked will you commit to doing away with this pipeline, not letting it go forward if an invasion were to occur, he didn't make that commitment.