Volodymyr Zelenskyy, the Ukrainian president, has already said the Royal Navy would be a good partner to help secure Ukraine's shipping lanes along with its Nordic allies.
Fleshing out details of ideas that are being discussed among European allies, led by the UK and France, it is understood that there could also be a kind of air policing-style mission, using fast jets based outside Ukraine, to assist with reopening Ukrainian airspace to civilian passenger planes once again.
He was referring to the US Patriot system, saying if Washington would not give Kyiv any more of these, perhaps it would be possible to buy them or receive a licence to build them in Ukraine.
British and other European troops could be deployed to Ukrainian cities, ports and nuclear power plants to help secure the peace following any ceasefire deal with Russia, western officials have said.
He has not elaborated on what that means but it is thought US involvement is vital to deliver the deterrent effect to ensure that Russia would not try to re-attack Ukraine for fear of triggering a US response.
