US President Joe Biden says the latest missile firings by North Korea violate a UN Security Council resolution that bans Pyongyang from launching ballistic missiles.
Biden made the comment at his first formal news conference as president on Thursday.
He said the US is consulting with its allies and partners and "will respond accordingly" if North Korea chooses to "escalate."
Biden added he is also "prepared for some form of diplomacy, but it has to be conditioned upon the end result of denuclearization."
The Biden administration is expected to soon complete its review of US policy toward North Korea. Attention is focused on how the policy will be affected by the president's view of Pyongyang's latest missile launches.