The seeds of the relationships between Donald Trump and key figures in the Russian business and political worlds — now the subject of special counsel Robert Mueller’s investigation — were planted at least five months before Trump’s now famous 2013 trip to Moscow, during a previously unreported visit to a raunchy Las Vegas nightclub with the son of a prominent oligarch and Putin ally, according to a new book about Trump and his Russian ties. The excerpt being published today explores the events surrounding Trump’s November 2013 visit to Moscow to oversee the Miss Universe pageant, and to vigorously pursue...