"What the hell's going on here? What president ever talks like that? That's not who we are," Biden told CBS News partner ...

The U.S. is increasing its espionage in Greenland as part of Donald Trump’s campaign to take control of the island.

"The president has been very clear that the U.S. is concerned about the security of Greenland and the Arctic," Hewitt said.

The push underscores the seriousness of President Trump’s intent to acquire the island from Denmark.