North Korea claimed on Thursday that the US was overreacting to its recent missile launch and questioned the sincerity of Washington's offers of negotiations, accusing the US of having "double standards" when it comes to weapons development.

Pyongyang has said in recent weeks that its nuclear tests are intended at improving its defense systems, as do those of other countries, and has accused the US, South Korea, and the UN of adopting a hostile stance and using "double standards" toward it.

According to the official KCNA news agency, North Korea's test of a new ballistic missile from a submarine this week was regular action as part of the country's mid-and long-term defense plan and was not intended against the United States or any other country.

Despite this, the spokesman added, Washington has made "extremely aggressive actions" by asking for a UN Security Council meeting. Following a request from the United States, the Security Council convened on Wednesday.

“To criticize the DPRK for developing and test-firing the same weapon system like the one the US possesses or is developing is a clear expression of double standards,” the spokesperson said in a statement carried by KCNA.

“It only excites our suspicion about the 'authenticity of its statement that it does not (want to) antagonize the DPRK.”

Any wrong behavior by the US and the council could lead to “more serious consequences”, the spokesperson said, warning against “tampering with a dangerous time bomb”.