* Sergei Millian was named as the source of the dirty dossier claims on Tuesday * The 38-year-old is accused of telling friends he knew about Trump's 2013 Moscow visit * Boasts he allegedly made to third parties were passed on to Christopher Steele, the British ex-MI6 spy who compiled the dossier for Trump's political enemies * Among explosive, unverified allegations is that Trump cavorted with prostitutes * Millian previously boasted about having a business friendship with the president * President Trump's camp claims no such relationship between the pair exists * They say they have asked Millian, who attended...
