North Korea threatened Monday to unleash "thousands-fold" revenge against the United States after the United Nations imposed new sanctions on the communist regime, according to The Associated Press.

Last week, the U.N. Security Council unanimously approved new sanctions against North Korea after the country tested intercontinental ballistic missiles. According to the AP, the sanctions include a ban on coal and other exports, which are worth more than $1 billion.

In remarks at the U.N. last week, U.S. Ambassador Nikki Haley called the resolution — which was drafted by the United States — "the single largest economic sanctions package ever leveled against the North Korean regime.”

“The price the North Korean leadership will pay for its continued nuclear and missile development will be the loss of one-third of its exports and hard currency,” Haley said.

According to the AP, North Korean state-run media called the sanctions a "violent infringement” of North Korea’s sovereignty and part of a "heinous U.S. plot to isolate and stifle" the country.

USA Today reported that North Korean media also said the country is "ready to retaliate with far bigger actions to make the U.S. pay a price for its crime against our country and people," adding that they will respond with a "stern action of justice."

President Donald Trump took to Twitter on Sunday evening to say he had spoken with South Korean President Moon Jae-in, who, according to Trump, was "very happy and impressed" with the new sanctions.