you as president joe biden, and french president emanuel mack crohn, led the main ceremony, remembering the states june 6th 1944. that's when allied soldier troops landed on the beaches of normandy to begin the liberation of western europe from nazi germany. it was the biggest seaboard invasion in history. are you as president biden said, that the anniversary comes at a critical time for the nations that took part. we live in the time of democracy in more risk across the world. that a point since the end of world war 2 essentially beaches were storm in 1944. now we have to ask ourselves where we stand against charity against evil guys, crushing brutality of the best. we stand for freedom, we do brand democracy. we stand together by answers. yes, all it can be yes. well, i'm joined now by daniel todd, been, he's a professor of modern history at queen mary university in london. professor, it's good to have you on the program, the lessons of the day. what would you say are the main lessons that could help us better navigate the challenges that we face? not in 1944, but rather in 2024. than