President Vladimir Putin has updated Russia’s nuclear doctrine, two days after his US counterpart Joe Biden granted Ukraine permission to strike targets deep inside Russia with US-made weapons. Under the updated doctrine issued Tuesday, Moscow will consider aggression from any non-nuclear state – but with the participation of a nuclear country – a joint attack on Moscow. In a phone call with reporters Tuesday, Kremlin spokesperson Dmitry Peskov noted the changes mean that “the Russian Federation reserves the right to use nuclear weapons in the event of aggression using conventional weapons against it and/or the Republic of Belarus.” “An important...