As Pantelis Ikonomou writes in his article for

“US president-elect Biden assumes responsibility Wednesday facing an extraordinary reality: nuclear risks. Ahead even of climate change and disruptive technologies, nuclear weapons pose a vital challenge to world leaders. Shifting geopolitics have raised nuclear risks higher than ever before. Intent, accident or miscalculation could lead to a nuclear apocalypse. According to the Atomic Scientists, the Doomsday Clock is closer to midnight than at any time since 1947: 100 seconds.”

You can read the article here.