Ukraine conflict: Cardinal Bo fears ‘nightmare scenario’ of ‘global nuclear holocaust’. Cardinal Charles Maung Bo, pictured on May 12, 2016. / Mazur/catholicnews.org.uk. Yangon, Burma, Mar 4, 2022 / 03:07 am (CNA). Cardinal Charles Maung Bo said on Friday that the “nightmare scenario” of a global nuclear holocaust was “becoming a possibility” following Russia’s invasion of Ukraine. The leader of the Catholic Church in strife-torn Burma said in a March 4 message that the world was on the brink of “self-annihilation.” “The world stands at an existential crossroads. The nightmare scenario of a gl…