on the joint comprehensive plan of action on iran's nuclear program. >> there is no u.s. strategy to push back against or be in conflict with china. >> laura: remember when kerry visited china earlier this month. senior officials would not even dig ify my -- dignify him with a meeting in person. it was on zoom after he went all the way over. there he returned from that trip apologizing more than before. >> there are other things as well. what is the process by which one trades off climate against human rights? >> well, life is always full of tough choices.