"Trump and Putin: A Love Story: The attraction is mutual, but history shows who’s really using whom."
http://www.newyorker.com/news/news-desk/trump-and-putin-a-love-story
This is an excellent account of Putin's rise to power, his desire to restore the influence and power of the Soviet Union, his opposition to the policies of the Clintons and President Obama, and the advantage he sees in Trump's being elected president.
About Putin's ambitions for spreading Russian influence:
It is safe to say that, on a strictly intellectual level, Donald Trump understands little of this. In recent weeks, he has made it plain that he is ignorant of the basics of contemporary Russian and geostrategic reality. He has declared NATO “obsolete” and has suggested that he might do away with Article 5, which promises that an attack on one member state is an attack on all. He makes the threat not because he is interested in reassessing anything as complex as global-security strategy but, rather, because not every member state is forking over its dues.
On Trump's and his associates' economic ties with Russia:
Some analysts have said that Trump’s affection for Putin is based mainly on his own, and his circle’s, economic interests. Paul Manafort, his campaign manager, profited immensely as an adviser to Viktor Yanukovich, the pro-Russian (and now deposed) leader of Ukraine. (Manafort has also worked as a lobbyist for other dictators, including Mobutu Sese Seko, of Zaire, and Ferdinand Marcos, of the Philippines.) Carter Page, one of Trump’s foreign-policy advisers, has longstanding ties to Gazprom, a pillar of Russia’s energy industry. Donald Trump, Jr., has made it plain that the family has pursued opportunities in Russia for decades. “Russians make up a pretty disproportionate cross-section of a lot of our assets,” he said, in a speech in 2008 to a real-estate conference, according to the Washington Post. “We see a lot of money pouring in from Russia.” The public would have a more detailed sense of this if Trump were ever to release his tax returns.
Putin sees Trump as a useful idiot:
Vladimir Putin is a cunning and cynical reader of his adversaries. He notices that Trump does not know the difference between the Quds Force and the Kurds, or what the “nuclear triad” is; that his analysis of Brexit was based in part on what might be good for his golf courses in Britain; that his knowledge of world affairs is roughly that of someone who subscribes to a daily newspaper but doesn’t always have time to get to it. Overwhelmed with his own problems at home, Putin sees the ready benefit in having the United States led by an unlettered narcissist who believes that geostrategic questions are as easy to resolve as a real-estate closing. Putin knows a chump when he sees one.
A long article, but well worth the read. Another reason why it is dangerous to elect a moron as president.