also reiterating that he is willing to walk away from negotiations. >> if they don't denuclearize, that will not be acceptable. we cannot take sanctions off. >> maximum pressure is absolutely in effect. we don't use the term anymore because we're going into a friendly negotiation. you hear me saying we're going to use maximum pressure, you'll know the negotiation did not do well, frankly. >> reporter: the president suggesting that the summit could be extended and that he would not hesitate to invite kim to the white house if talks go well. >> i think it will be well received. i think he would look at it very favorably. so i think that could happen. >> reporter: and president trump is going to be skipping a number of sessions here at the g-7, focusing on climate change and the environment. not surprise fog or a president who claimed climate change is a hoax being perpetrated by the chinese. he will leave quebec city and