U.S. President Donald Trump said he no longer feels obligated "to think purely of peace" after not receiving the Nobel Peace Prize and reaffirmed his desire to acquire Greenland, according to a letter shared by Norwegian Prime Minister Jonas Gahr Store on Monday.

According to local media reports, Store said the letter was a response to a short message he had sent to Trump earlier in the day on behalf of himself and Finnish President Alexander Stubb.

In the letter, Trump suggested it was Norway's decision not to award him the Nobel Peace Prize for what he described as "stopping eight wars." He stated that he "no longer feels an obligation to think purely of peace," and could now "think about what is good and proper" for the United States.

Store said he has repeatedly explained to Trump "the well-known fact" that the Nobel Peace Prize is awarded by an independent committee, not the Norwegian government.

Trump further claimed that since NATO's inception, the United States has contributed more to NATO than any other country, and "now NATO should do something for the United States." He asserted that "the complete and total control of Greenland" by the United States is the only way to ensure global security.

(With inputs from Xinhua)