North Korea claimed to have successfully tested an engine designed for an intercontinental ballistic missile.
The new type of engine would “guarantee” the ability to launch a nuclear strike on the US mainland, the KCNA news agency said.
The test was conducted at the country’s long-range missile launch site near its west coast.
It is the latest in a series of tests and launches carried out by the isolated nation.
Leader Kim Jong-un supervised the test, state media reported, during which “the engine spewed out huge flames with a deafening boom”.
The country would now be able to “keep any cesspool of evils in the earth including the US mainland within our striking range,” Kim was quoted as saying.