Gorbachev concluded

Would Russia or China Help Us if We Were Invaded by Space Aliens?

As Gorbachev put it later: “President Reagan suddenly said to me, ‘What would you do if the United States were suddenly attacked by someone from outer space? Would you help us?’”

“I said, ‘No doubt about it.’”

“He said, ‘We too.’”

“So that’s interesting,” Gorbachev concluded.