Ukrainian President Volodymyr Zelensky has stressed he will make no territorial concessions to Russia ahead of a meeting between Donald Trump and Vladimir Putin on the future of the war in Ukraine next week.

Trump earlier signalled Ukraine may have to cede territory to end the war, which began with Russia's full-scale invasion in February 2022.

Zelensky said in a Telegram post on Saturday that "Ukrainians will not give their land to the occupier", and reiterated that Ukraine must be involved in any solution for peace.

His comments came ahead of a meeting of security officials from Europe, Ukraine and the US, hosted by UK Foreign Secretary David Lammy and US Vice-President JD Vance.

The meeting is understood to be taking place at Chevening, Lammy's official country residence in Kent, where Mr Vance and his family are currently staying, and to have been called at the request of the US.