will not be nearly as warm and he of course knows that better than anyone. >> in that environment governing can be hard. thank you so much, jeff zeleny in geneva. russian president vladimir putin describing his summit with president biden as, quote, constructive. the russian president said there was no hostility and voiced optimism about the possibility of future results. >> translator: the meeting had results, it was substantive, it was concrete and it took place in an atmosphere that was geared toward achieving results. >> but the points of conflict between the two nations are obvious here. president putin denied russian responsibility for an uptick in recent cyber attacks. president biden hinted at u.s. retaliation if they do not stop. joining us now international diplomatic editor nic robertson is live in london for us.