Pope Leo XIV has met with Ukrainian President Volodymyr Zelensky following his inauguration Mass.

Posting on Telegram after the meeting, Zelensky thanked the new Catholic leader for his "support for Ukraine" and "clear voice in defence of a just and lasting peace".

Addressing thousands in St Peter's Square, the Pope used his inaugural mass to highlight concerns about the war in Ukraine, also warning against marginalisation of the poor and autocracy.

Zelensky, US Vice President JD Vance and the US Secretary of State Marco Rubio were among dignitaries in attendance.