U.S. President Donald Trump and Ukrainian leader Volodymyr Zelenskiy had a "very productive" meeting on Saturday in Rome, a White House official said, as both leaders attended the funeral of Pope Francis.

Trump had previously warned both sides his administration would walk away from its efforts to achieve a peace if the two sides do not agree a deal soon. The meeting in Rome is the first face-to-face encounter between Trump and Zelenskiy since an Oval Office meeting in February that turned into a shouting match.

During his whirlwind trip to Italy, President Trump’s interactions with world leaders, as they paid their respects to Francis, were being watched closely.