North Korea, which has offered effusive praise for U.S. President Donald Trump, delivered a scathing rebuke of one of his top Democratic foes, Joe Biden, for insulting leader Kim Jong Un, calling the former vice president "an imbecile bereft of elementary quality as a human being, let alone a politician."

In a commentary published late Tuesday, the North's official Korean Central News Agency blasted Biden, a leading Democratic candidate for president, for having "the temerity to insult the supreme leadership of the DPRK, an intolerable and serious politically motivated provocation."

DPRK is the acronym for the North's formal name, the Democratic People's Republic of Korea.