He said this in an interview with The New York Post.“That was six [eight] months ago. We have turned over a new leaf,” Vance said.At the same time, the vice president acknowledged that his dispute with the Ukrainian leader was “probably the most famous thing I’ve ever done, or maybe ever will do.”"If you go back to that moment, I was getting frustrated because I perceived some rudeness. I think the takeaway from that for me, but also I think for any foreign leader who comes to the Oval Office, in particular … you try to basically respect the rules of the house that you’re in," the politician continued.According to him, Washington is trying to build productive relationships with both Kyiv and Moscow."If you asked me six months or so ago, I would have said, ‘They’re never going to stop fighting. This is going to be like Russia’s Vietnam. 15 years later, they’re still going to be fighting.’ If you asked me a month ago, I would have said we’re making incredible progress [toward peace]," Vance concluded.Earlier, Vance said that he considered the dispute in the Oval Office between the presidents of Ukraine and the United States, Volodymyr Zelenskyy and Donald Trump, to be useful because it revealed the differences between the parties.