Joe Biden told Vladimir Putin he would engage in peace talks if he "pulled out" of Ukraine, but President Volodymyr Zelenskyy's definition of "pullout" might just be different to his. Sky's political editor Beth Rigby has spoken to a top US diplomat. Please use Chrome browser for a more accessible video player A top US diplomat Wendy Sherman has refused to be drawn on exactly what Joe Biden's vision of a Russian "pullout" of Ukraine would be. The US president said last week, for the first time since the invasion of Ukraine, that he would be willing to speak to Vladimir Putin if he truly wanted to end the war. He said: "There's one way for this war to end - the rational way. Putin to pull out of Ukraine, number one." But when pressed by Sky News' political editor Beth Rigby, US deputy secretary of state Wendy Sherman would not be drawn on whether a "pullout" also included withdrawal from Crimea, illegally annexed by Russia in 2014. She reminded the diplomat that Ukraine president Volody