text:  It comes as Donald Trump addressed Republicans at their national convention in Milwaukee with the fear in Europe that if he wins November's presidential election, he'll be less committed to the security of the continent than President Biden. Mr. Zelensky was speaking to the BBC's political editor, Chris Mason. When Donald Trump said last year that he thought this war could end within 24 hours if he was to meet both you and Vladimir Putin, what did you make of that?