Until the end of his presidential term, Joe Biden will be talking about the need to support Ukraine. He will convince President-elect Donald Trump and the Congress to continue their support, Biden’s National Security Adviser Jake Sullivan says. Sullivan noted that the approach of the current US president’s administration in recent days remains the same as it has been for the past two and a half years, namely “to put Ukraine in the strongest possible position on the battlefield so that it is ultimately in the strongest possible position at the negotiating table.” The Biden adviser confirmed tha…