http://www.alternet.org/election-2016/donald-trump-was-bailed-out-bankruptcy-russia-crime-bosses
http://reverbpress.com/world/donald-trump-russian-mafia-manchurian-candidate/
Lets start with Felix Sater, whose father is a Russian Organized Crime boss, and who is one of the direct links between the Republican party Nominee for the Presidency of the United States of America, and Russian Organized Crime. Sater, the Russian émigré and a felon convicted twice over ties to the Mafia, has appeared in many photos with Trump, and reportedly carried a Trump Organization business card with the title of Senior Advisor to Donald Trump. Sater also served time in prison for a 1991 assault at El Rio Grande restaurant in New York. He is also an executive of Bayrock Group LLC, a real estate development firm that has partnered with Trump in different projects; the founding chairman of Bayrock, Tevfik Arif, is known for its ties with Russian organized crime. In 2010 he was even charged in Turkey for the crime of smuggling underage girls into the country for prostitution purposes (something, its worth noting, very similar to what Trumps friend and fellow billionaire, the pedophile Jeffrey Epstein was convicted of the same Jeffrey Epstein whom Trump is accused of raping a 13 year old girl with).
As explained by The Washington Post, there is also strong evidence on Trumps businesses receiving significant funding from different Russian investors. In fact, in 2008, Donald Trump Jr. said at a conference:
Russians make up a pretty disproportionate cross-section of a lot of our assets
we see a lot of money pouring in from Russia.
Inside Moscow, he has never built a property, but not because he has not tried.
Trumps advisers also have financial ties in Russia. Paul Manafort, Trumps campaign manager, got an investment fund for a Russian aluminium magnate who is now suing him saying Manafort disappeared with $19 million. He also tried to establish a multimillion-dollar real estate project with funds from a Ukranian energy tycoon, although this was unsuccessful, and worked as an adviser to Ukraines Putin-backed president. And Manafort may still be on the payroll of a pro-Putin Ukranian politician.
Indeed, there is evidence that the Trump campaign even flexed its muscles as the nominees campaign to alter the Republican Party platform in favor of Russias annexation of Crimea something Trump has even said he would consider. And while the Trump campaign denies strong-arming the platform committee, high ranking Republicans insist its true.