Nuclear deterrence is taking center stage in Japan's security policy after Russia's threat to use nuclear weapons in its war against Ukraine, with Tokyo re-emphasizing the centrality of the U.S. nuclear umbrella amid regional tensions heightened by China's muscle flexing.But Japan will still face a delicate juggling act since, as the only country to have experienced the horrors of a nuclear attack, it remains committed to leading discussions on bringing about a world without nuclear weapons and will continue to face calls from survivors of the 1945 atomic bombings to do more to bring that a…READ FULL ARTICLE