A senior ally of President Vladimir Putin warned on Friday that Moscow would regard any move by Britain to deploy a military contingent to Ukraine as a declaration of war against Russia. Former Russian President Dmitry Medvedev, now deputy chairman of Russia's Security Council, made the comments in response to a visit by British Prime Minister Rishi Sunak to Kyiv to announce an increase in military funding to help Ukraine purchase new military drones. "I hope that our eternal enemies - the arrogant British - understand that deploying an official military contingent to Ukraine would be a declaration of war...