to make that pivot. the real lesson of afghanistan is to put it behind us, to manage it in a way that secretary blinken described, and then, to move forward, building back better, investing in ourselves, and finding a new wage engage with the world, as blinken described several months ago, not from perspective of american exceptionalism, but from the perspective of engagement with peoples and real partnerships. >> let's listen more to what's blinken said today about what's our lessons should be. >> the one afghanistan was a 20-year endeavor. we must learn its lessons, and allow those lessons to shape how we think about fundamental questions, of national security and foreign policy. >> joe, that was the lesson were supposed to learn from vietnam. the fundamental questions of national security and foreign