I hereby challenge Putin to single combat, stakes are Ukraine: Elon Musk

World's richest man Elon Musk on Monday tweeted

I hereby challenge Vladimir Putin to single combat...Stakes are Ukraine.

- Elone Musk

When a Twitter user asked, "Will you be surprised when he (Russian President Putin) accepts your challenge?"

Musk responded, "That would be an honour." Musk's tweet garnered users' reactions like, "Go to bed Elon," and "I need some of what you're drinking."