Trump is handing Biden a more dangerous world. There's only so much the new president can undo

As US President Donald Trump he hands power to Joe Biden on Wednesday -- however reluctantly -- he also hands his successor a far more dangerous world than it was four years ago.

President Donald Trump's impact on the world at large has been much the same. As he hands power to Joe Biden on Wednesday -- however reluctantly -- he also hands his successor a far more dangerous world than it was four years ago. At the start of 2020, the Bulletin of Atomic Scientists behind the symbolic Doomsday Clock moved the time to 100 seconds to midnight, indicating that the world was closer to annihilation than it had been at any time since World War II.