President Donald Trump says his meeting with Volodymyr Zelenskiy at the Vatican on Saturday went well and said the next few days will prove if there was progress in the Russia-Ukraine conflict.

VATICAN CITY (Reuters) -U.S. President Donald Trump and Ukrainian leader Volodymyr Zelenskiy, in Rome for the funeral of Pope Francis, met one-on-one in a marble-lined Vatican basilica on Saturday to try to revive faltering efforts to end Russia's war with Ukraine.

Volodymyr Zelenskiy acknowledged that Ukrainian forces would be unable to regain control over Crimea and said the US won’t have to commit troops as part of security guarantees in an apparent overture to President Donald Trump.