but we do not lead with our military force. >> woodruff: frank wisner, corey shaoqi, robertrenier.ank you all so much for being with us. thank you. >> thank you. >> yang: on the eve of the 20th anniversary of the deadliest terror attack in the country, we are in the midst of another calamity: covid-19. here to break down the political aspects of all this, the analysis of brook and capehart. that's "new york times" columnist david brooks, and jonathan capehart, columnist for the "washington post." gentlemen, we just ladder judy lead a discussion about the foreign policy aspects of all of this. and certainly i can, looking back on 9/11, i remember how we felt changed from this. but looking back, looking backward at it, how did we change? are we changed as a people, as a nation, as a political system, david? what's your take? >> well, it's a globe. it was the first act of the 21st century. i was a foreign correspondent in the '90s, covered nothing but good news. the end of apartheid and the oslo peace process. it was convergence, china was liberalizing. we were communicating with each