Donald Trump once threatened to blow up Russia's churches, claims Rudy Giuliani, former mayor of New York.
The aid appeared on Newsmax - a right-wing television network - where he shared a bizarre anecdote with the hosts.
He claimed that the former US President once threatened Vladimir Putin, saying that he would 'blow up' Russian churches if he invaded Ukraine.
"So, he has a meeting with Putin and he tells him, they're talking about Ukraine and he says, "Vladimir, you shouldn't, like, attack Ukraine, cause then I'm gonna - well I never liked those big - what are those things you've got in Moscow? Those big bubbles, those big gold bubbles. I never liked those things. So, I'm going to have to blow 'em up.
"So, Putin says, 'They're churches.' And he said, 'Oh, Vladimir. Don't tell me that about churches. Oh, come on. Churches? You can fool Bush, you can't fool me. Churches, you care about churches?' That's what he's like."
The 'gold bubbles' are believed to be a reference to the Cathedral of Christ the Saviour, in Moscow. However, the reference has also been attributed to St Basil's Cathedral, in the same city.
St Basil's Cathedral is recognised as a significant and irreplaceable monument - one of the few that survived the Stalin regime.
Donald Trump recently appeared in an interview with Fox News, where he was pressed on the situation in Ukraine, and what he would do if he was in office.
His response was to 'get the oil flowing', in order to lower the price of fuel.