Leif-Eric Easley, a professor at Ewha University in Seoul, said Ri's remarks were "essentially a threat that North Korea will respond to the US policy review with more tests". The tests came as a response to renewed regional military drills between the USA and South Korea.
On Friday, following reports of a projectile from Japan and South Korea, North Korea claimed it had launched a new type of tactical short-range ballistic missile.
Ri Pyong Chol, secretary of the Central Committee of the Workers' Party of Korea, said the missile test was self-defensive against threats posed by South Korea and the United States with their joint military exercises and advanced weapons.
But in Saturday's statement, North Korea also slammed the South Korea-U.S. military exercises that ended last week, even though they were repeatedly scaled back to facilitate a restart of denuclearization talks with Pyongyang.
Security Council sources say many committee members expressed concern over the missile launches, calling them violations of past resolutions.
He accused the Biden administration of "exploiting every opportunity" to provoke Pyongyang by branding it as a "security threat". According to South Korean officials, North Korea fired two other missiles on Sunday but they were likely cruise missiles, which are not banned. "If the war exercise staged by the U.S. right before its belligerent party across the ocean is for 'defense, ' we are supposed to have the full-fledged right to self-defense to contain the former's military threat on its mainland", Ri continued.
"I think that the new United States administration obviously took its first step wrong", Ri said in the statement, which KCNA reported was issued on Friday. "If the U.S. continues with its thoughtless remarks without thinking of the consequences, it may be faced with something that is not good".
Biden is making a huge 180-degree turn from President Trump's fire and fury response to North Korea's posturing, which eventually led to bilateral talks. "If the USA continues with its thoughtless remarks without thinking of the consequences, it may be faced with something that is not good", he added.
"I know very well our people have big worries about North Koreas missile launches yesterday", Moon said during a military ceremony.
'We can not but build invincible physical power for reliably defending the security of our state under the present situation in which South Korea and the United States constantly pose military threats, ' Ri said in a statement to the KCNA news agency. "We will respond accordingly". The State Department did not immediately respond to a request for comment.
Ties between the US and the DPRK have remained tense for decades and remained as such under the Trump administration, despite former US President Donald Trump and North Korea leader Kim Jong Un holding meetings on two occasions.