Vladimir Zhirinovsky, a flamboyant veteran lawmaker known for his fiery rhetoric, told Reuters in an interview that Trump was the only person able to de-escalate dangerous tensions between Moscow and Washington.
By contrast, Trump's Democratic rival Hillary Clinton could spark World War Three, said Zhirinovsky, who received a top state award from Putin after his pro-Kremlin Liberal Democratic Party of Russia (LDPR) came third in Russia's parliamentary election last month.
Zhirinovsky, who said he met Trump in New York in 2002, revels in his similarities with the American businessman - they are the same age, favor coarse, sometimes misogynistic language and boast about putting their own country first. Zhirinovsky has even said he wants a DNA test to see if he is related to Trump.
"Most Americans should choose Trump because men have been leading for millions of year. You can't take the risk of having one of the richest, most powerful countries led by a woman president," he said.
"Victory for Trump would be a gift to humanity. But if Hillary Clinton wins it will be the last U.S. president ever."