PARIS: Russia's new nuclear doctrine reflects its hopes to deter Ukraine's allies from a greater role in the war by establishing red lines hedged with added ambiguity, experts say. Moscow warned on Tuesday (Nov 19) that it would respond after Ukraine fired longer-range US missiles at its territory for the first time, as President Vladimir Putin issued a nuclear threat on the 1,000th day of the war. Foreign Minister Sergei Lavrov said the attack showed Western countries wanted to "escalate" the