North Korea lashed out at the United States and its allies in South Korea on Sunday in a series of statements saying recent comments from Washington are proof of a hostile policy that requires a corresponding response from Pyongyang.

The statements, carried on state news agency KCNA, come after the White House on Friday said US officials had completed a months-long review of North Korean policy, and underscore the challenges US President Joe Biden faces as he seeks to distinguish his approach from the failures of his predecessors.

"Our policy towards North Korea is not aimed at hostility. It's aimed at solutions," Jake Sullivan, Biden's national security adviser, said in an interview with ABC's "This Week" program on Sunday.