U.S. President Donald Trump claimed Wednesday Canada owes its continued existence to the United States while calling out Prime Minister Mark Carney for delivering a speech that condemned coercion by great powers.

Speaking in Davos, Switzerland, where he made the case for a U.S. acquisition of Greenland, Trump said he needs the Danish territory for his proposed “golden dome,” a missile defence system that could cover North America.

Trump said the dome will protect Canada due to geography and the country isn’t grateful enough that such a system is in the works. Carney has been non-committal in the past about Canada participating in or paying for what Trump is floating.