The former head of Kazakhstan’s intelligence service, Alnur Mussayev, recently claimed in a Facebook post that Donald Trump was recruited by the KGB in 1987, when the 40-year-old real-estate mogul first visited Moscow.

The allegation would, if true, be a bombshell. Mussayev provides no documentary evidence —but then how could he? He alleged that Trump’s file is in Vladimir Putin’s hands.

thehill.com, in "Assessing new allegations that Trump was recruited by the KGB"

Inspired by this I looked for some news reports about Trump in the eighties, found one mentioning he was to be visited by Gorbachev in New York.

Mr. Trump lost no time in deciding how to guide the Soviet leader through his Fifth Avenue tower, saying he would start by showing off the peach-colored marble in the tower's shopping atrium. ''I'm going to show his wife the stores,'' Mr. Trump said.
archive.is, in "For Gorbachev, Met Museum And Trump Tower Visits Due - The New York Times"

But of course the real story is much dumber than that:

Trump told reporters that the Russians had called him and said that Gorbachev wanted to tour Trump Tower. However, Gorbachev never showed. Instead, Trump was tricked into meeting a Gorbachev impersonator who showed up at Trump Tower at the behest of A Current Affair.
medium.com, in "Confused by Trump’s Russia Ties? This timeline breaks it down for you | by Abbie VanSickle | Medium"

Looks like Trump was onto it quite quickly, see minute 1:30. Guess he knows his russian leaders.