North Korea fired what appeared to be the most powerful missile it has tested since the US president, Joe Biden, took office, possibly breaching a self-imposed suspension on the testing of longer-range weapons and sparking condemnation from the United States and its allies.

The Japanese and South Korean militaries said the missile launched on Sunday travelled on a lofted trajectory, apparently to avoid the territorial spaces of neighbours, and reached a maximum altitude of 2,000km (1,242 miles) and traveled 800km (497 miles) before landing in the sea.

The flight details suggest North Korea tested its longest-range ballistic missile since 2017, when it twice flew intermediate-range ballistic missiles (IRBMs) over Japan and separately flight-tested three intercontinental-range ballistic missiles (ICBMs) that demonstrated the potential range to reach deep into the American homeland.

Sunday’s test was North Korea’s seventh round of weapons launches this month. The unusually fast pace of tests indicates its intent to pressure the Biden administration over long-stalled nuclear negotiations as pandemic-related difficulties unleash further shock on an economy broken by decades of mismanagement and crippling US-led sanctions over its nuclear weapons program.

“The United States condemns these actions and calls on [North Korea] to refrain from further destabilising acts,” the US military’s Indo-Pacific command said in a statement after Sunday’s launch.