chapter of lawlessness which will take us into a whole new stage of investigation. utah senator mitt romney, the sole republican to speak out demanded answers, adding if the president did pressure the president of ukraine, it would be troubling in the extreme. >> so kristen, as we mentioned, president trump here in new york city for the un general assembly, what are some of the issues at stake? >> reporter: well, craig, the questions swirling around this ukraine call will loom large, particularly because the president is going to be meeting with the president of ukraine on wednesday, so expect both leaders to get some tough questions about all of that, but perhaps the biggest issue is iran. remember the united states says iran was behind that attack against saudi arabia's oil field. the unite has imposed tough sanctions against iran. the president trying to build up international support for a broader international response. the president of iran is also going to be here this week,