Putin issues strongest-ever warning to West over Ukraine striking Russia

In the latest changes to Russia's nuclear doctrine, Vladimir Putin has warned that the country would consider deploying nuclear weapons if attacked by any state using conventional weapons. He announced that, under the planned revisions, an assault by a non-nuclear power with the "participation or support of a nuclear power" would be considered a "joint attack on...Russian Federation." The comments marked Russia's most severe warning to the West to date against allowing Ukraine to attack Russia using long-range western missiles.