A missile is launched during a long and medium-range ballistic rocket launch drill in this undated photo released by North Korea's Korean Central News Agency (KCNA) in Pyongyang on August 30, 2017

North Korea has fired a ballistic missile that landed near the Japanese coast.

The missile flew eastward and the South Korean military was analysing details with the US. A Pentagon spokesman that the missile was likely an intercontinental ballistic missile (ICBM) and it had travelled about 1,000 km. Japan said the missile had reached a height of 4,000 km, with South Korea saying 4,500 km.

Donald Trump was briefed while the missile was “still in the air”, White House Press Secretary Sarah Huckabee Sanders said, and Japanese Prime Minister Shinzo Abe convened a meeting of cabinet officials.

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Japanese officials had been bracing for an imminent missile launch, saying they had detected suspicious radio signals. North Korea has menaced Japan in recent months, firing a ballistic missile over Hokkaido in September — the second time it hurled a missile over Japan — and warning that the nation should be “sunken into the sea” by a nuclear strike.

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The launch marks the latest escalation of a global standoff with an increasingly assertive North Korea. The nuclear-armed hermit state has repeatedly displayed its military prowess in recent months, combining ballistic missile launches with threats of destroying Japan, the United States and the US territory of Guam. It tested a powerful hydrogen bomb for the first time.

Diplomatic constraints have failed to halt North Korea’s belligerence, with the country forging ahead with military tests despite successive rounds of United Nations sanctions targeting the country’s economy.