''How did Putin dupe anybody, specifically?''
We're not sure. But we believe Putin did a KGB style ''dangle.''
That is he had one of his oligarch pals dupe Trump into thinking he REALLY wanted to pay two bucks on the dollar for a house Trump owned.
It's called a ''dangle'' because if Trump refused; or if Trump referred the offer to the FBI, then they could simply walk away; deny everything; no harm done; just find the next stooge to ''dangle.''
But Trump, like a moron, took the bait, and now we have a Putin willful ''idiot'' in the Oval Office.