"Our policy will not focus on achieving a grand bargain, nor will it rely on strategic patience", Psaki said.
"His statement clearly reflects his intent to keep enforcing the hostile policy toward the DPRK as it had been done by the US for over half a century", he said, using the initials for North Korea's official name.
In Sunday's statement, Kwon Jong Gun said US talk of diplomacy is aimed at covering up its hostile acts, and its deterrence is just a means for posing nuclear threats to North Korea.
"Our goal remains the complete de-nuclearisation of the Korean Peninsula with a clear understanding that the efforts of the past four administrations have not achieved this objective", Psaki told reporters on Air Force One as Biden travelled to Philadelphia.
North Korea, so far, has refused diplomatic entreaties from the Biden administration. Ms. Psaki said officials consulted outside experts, allies and predecessors from several previous administrations as part of the process.
Biden, like his old boss Obama, has confirmed that he sees North Korea as perhaps the most delicate foreign policy quandary for the United States and its allies.
Trudeau dismisses Ontario's call for stricter land border quarantine rules
He called for a mandatory 14-day supervised hotel quarantine instead of the current three-day hotel stay for only air passengers. On April 16, 2021 Ontario Premier Doug Ford presented a graph showing that COVID-19 cases could increase to 10,000 a day.
She added that the US would continue to consult with the Republic of Korea (ROK), Japan, and other allies and partners on this issue. The law that took effect last month has invited criticism South Korea is sacrificing freedom of expression to improve ties with rival North Korea, which has repeatedly protested the leafleting.
Easley said the two back-to-back North Korean statements Sunday show that "Pyongyang is trying to drive a wedge between South Korea and the United States" ahead of the May 21 summit between Biden and South Korean President Moon Jae-in.
On April 15, Washington Post columnist David Ignatius quoted a senior administration official as saying the likelihood of North Korea giving up nuclear weapons right now was "close to zero" and the administration was seeking interim "way stations", such as halting weapons proliferation and checking North Korea's development of new delivery systems like submarine-launched ballistic missiles. Trump pressed Kim at a 2019 meeting in Hanoi to accept a complete denuclearization but failed to reach an agreement, later saying that the North Korean leader had wanted a full removal of USA sanctions. "If, on the other hand, Kim shuns diplomacy and opts for provocative tests, Washington will likely expand sanctions enforcement and military exercises with allies".
Days later, the North fired two short-range ballistic missiles into the sea in a defiance of United Nations resolutions that ban such launches by North Korea.
During the trip, Blinken sternly criticised North Korea's nuclear program and human rights record and pressed China to use its "tremendous influence" to convince the North to denuclearise.