The United States on Saturday expressed disappointment at a predawn military parade in North Korea that showcased a cutting-edge intercontinental ballistic missile.
"It is disappointing to see the DPRK continuing to prioritize its prohibited nuclear and ballistic missile program," a U.S. official said in a statement, using the acronym for the Democratic People's Republic of Korea, North Korea's official name.
The United States is urging North Korea to "engage in sustained and substantive negotiations to achieve complete denuclearization," the official said, touching on an agreement reached by the two countries' leaders during their first-ever summit in 2018.
At the summit in Singapore, U.S. President Donald Trump promised North Korean leader Kim Jong Un that Washington would provide security guarantees to Pyongyang in return for "complete" denuclearization of the Korean Peninsula.
Trump met Kim two more times, but their talks made little progress, with the two countries at odds over issues such as the degree of sanctions relief Pyongyang should receive for denuclearization steps.
"The United States remains guided by the vision President Trump and Chairman Kim set forth in Singapore," the official said.
At the nation's first military parade in two years, North Korea on Saturday displayed what appeared to be new types of ballistic missiles, including what analysts say is the highest-level ICBM, carried on a launch vehicle with 22 wheels.
In 2017, North Korea tested ICBMs that could potentially deliver a nuclear warhead to the U.S. mainland. It has not tested ICBMs since.