d.c. qinghai airpower, who will show me the way in the world. >> this is an incredible amount of rich detail. >> you can watch this and other programs online at booktv.org. >> let me be very clear. this is a delicate diplomatic moment. we have a chance to address peacefully one of the most pressing national security concerns the world faces today with gigantic implications of the potential of conflict. we are at a crossroads. we are at one of those hinged points in his story. one half could lead to an enduring resolution in international concerns about iran's nuclear program. the other half could lead to continued hostility and potentially conflict. i don't have to tell you these are high stakes. >> this weekend on c-span secretary of state john kerry on why house members should not impose additional sanctions against iran as talks continue and freezing parts of iran's nuclear program. watch this morning at 10:00 eastern on c-span2's booktv. dick cheney and his longtime cardiologists talk about the former vice president's history with heart disease and recent advances in cardiology tonight a