By Andrew MacAskill and Elizabeth Piper LONDON (Reuters) -British Prime Minister Keir Starmer said Western military talks on Thursday would focus on the details of a support plan for Ukraine, a crucial step in making sure the West could move quickly if a peace deal were struck between Kyiv and Moscow.

British PM told meeting of defence chiefs in London that security arrangements must be in place to ensure sovereignty for Ukraine Russian President Vladimir Putin "will breach" a peace in Ukraine unless any potential deal is defended,