Appearing at the press conference with Ukrainian President Volodymyr Zelensky, Biden took a question from Bloombergs Josh Wingrove.

Wingrove asked the president if he would give his assessment of Hamas response to the latest ceasefire proposal.

Do you believe that they are trying to work towards a deal or is this response against a deal?

Joe Biden

Joe BidenPhoto by Christopher Furlong/Getty Images

Holocaust Museum’s Board

Biden responded, I wish you guys would play by the rules a little bit.

Im here to talk about a critical situation in Ukraine and you asked me about another subject.

Whether it comes to fruition remains to be seen.

Donald Trump and ABC News' Terry Moran

At the press conference, Biden said of his son, Im extremely proud of my son Hunter.

He has overcome an addiction.

Hes one of the brightest, most decent men I know.

I said I will abide by the jury decision.

I will do that, and I will not pardon him.