The UK and France have signed a declaration of intent on deploying troops in Ukraine if a peace deal is made with Russia, UK Prime Minister Sir Keir Starmer has said.

After talks with Ukraine's allies in Paris, he said the UK and France would "establish military hubs across Ukraine and build protected facilities for weapons and military equipment" to deter future invasion.

The allies also proposed that the US would take the lead in monitoring a ceasefire.

Russia has repeatedly warned that any foreign troops in Ukraine would be a "legitimate target", but has not yet commented on the announcement.

Russian President Vladimir Putin launched a full-scale invasion of Ukraine in February 2022, and Moscow currently controls about 20% of Ukrainian territory.