Sir — This refers to the article, “The two biggest threats to world peace today” (September 8) by RK Pachauri. According to the writer, nuclear weapons and climate change are the two threats drawing us at the brink of destruction. Several countries possess nuclear weapons for decades but we never felt such perilous situation as we do now. For instance, North Korea has been justly termed as ‘rogue’ and the US has gone so far as to threaten it with a “fire and fury like the world has never seen”.