Vice President Joe Biden is spending his last days in office trying to unite the world against Russia, even as President-elect Donald Trump talks of greater relations with Moscow.

“You’re fighting both the cancer of corruption … and the unrelenting aggression of the Kremlin,” Biden said Monday in Ukraine.

”The international community must continue to stand as one against Russian coercion and aggression,” Biden added, on his last official foreign trip.

But Biden’s words might not carry so much weight.

In a weekend interview with the Times of London, Trump said he may be able to work out a deal with Russia that would reduce sanctions on Moscow in exchange for nuclear arms reduction.

“They have sanctions on Russia — let’s see if we can make some good deals with Russia. For one thing, I think nuclear weapons should be way down and reduced very substantially, that’s part of it,” Trump told the paper.

Biden will stop in Davos, Switzerland, after he leaves Ukraine before heading back to the US on Jan. 18. Biden — and President Obama — will leave office Jan. 20, when Trump and Vice President-elect Mike Pence are sworn in.