KEY POINTS
  • Billionaire hedge fund manager Bill Ackman has warned that World War III has "likely started already" amid Russia's ongoing attack on Ukraine.
  • Ackman argued that Western failure to intervene in Moscow's invasions of Georgia and Crimea had "emboldened" Russian President Vladimir Putin "to take more."
  • But he said that ultimately, the key to ending the crisis in Ukraine sat with China.
Bill Ackman, founder and CEO of Pershing Square Capital Management.

Billionaire hedge fund manager Bill Ackman has warned that World War III has "likely started already" amid Russia's invasion of Ukraine.

"In January 2020, I had nightmares about the potential for a pandemic, but everyone seemed to think I was crazy. I am having similar nightmares now," Ackman said via Twitter late Saturday.