lederman in warsaw, thank you so much for that. >>> joining me now, msnbc political contributor, ben rhodes, former deputy national security adviser, under president obama. and former u.s. mc chief of staff to europe, and we hope to get shannon pettypiece, digital reporter to join the conversation. ben, i'm going to start with you, what do you think the most important message is for the president to get across in his address today? >> well, i do think that this has been such an overwhelming month of news and images for americans back home in terms of digesting something that we have not seen on the european continent since world war ii. and i do think that he needs to kind of step back, and explain what is taking place, why it matters to us, what we're doing, but also where this is going. we've had sanctions imposed, troops deployed to the eastern flank, pouring weapons into ukraine, and i think what the world is looking for is what story president biden can tell about why democracy must prevail over authoritarianism. what we and our allies are going to do to help ukrainians on the front line of the flight. and also preparing peop