>> he says an important part of his story took place three years before the meeting in moskow. there he saw a growing relationship between donald trump and the family of a russian oligarch. >> one reason that donald trump was so keen to hold this contest in moskow was because he would be doing it with agalarov, a billionaire developer. >> he's reported expensively on trump's relationship with russia. >> in fact people within the organization, as they told me later, all assumed that holding miss universe in moskow was a way for trump to further his business interests there. >> trump traveled to moskow in 2013 for the pageant. the trip would only last a day and a half. but it would impact trump's business and perhaps his presidency. rob goldstone was there with his client emen agalarov, whose father cosponsored the pageant.