Nuclear-armed North Korea said Tuesday its missile launches were training for a strike on US bases in Japan, as global condemnation of the regime swelled.
Three of the four missiles fired Monday came down provocatively close to US ally Japan, in waters that are part of its exclusive economic zone, representing a challenge to US President Donald Trump.
In a phone call, Trump and Japanese Prime Minister Shinzo Abe warned that the threat from North Korea had "entered a new stage".
The UN Security Council scheduled an emergency meeting for Wednesday after a request by Washington and Tokyo to discuss additional measures following the launch.
Under UN resolutions, Pyongyang is barred from any use of ballistic missile technology, and the US ambassador to the UN, Nikki Haley, said on Twitter that the world "won't allow" North Korea to continue on its "destructive path".