Flaring up already heightened tension on the Korean Peninsula, North Korea slammed tougher sanctions against its nuclear test and continued ramping up war rhetoric on Saturday.

An unidentified spokesman for the North‘s foreign ministry denounced the U.N. Security Council’s toughened sanctions to punish the North‘s third nuclear test, calling them “clear proof” that the U.N. is “abused” by the United States that aims to bring down the Pyongyang regime “by disarming and suffocating it economically.”

The U.N. Security Council unanimously adopted Resolution 2094 on Friday (Eastern Standard Time), which is aimed at punishing the North for carrying out an underground nuclear test on Feb. 12. The blast came two months after it carried out a banned long-range rocket launch.

“The DPRK vehemently denounces and totally rejects the resolution on sanctions against the DPRK, a product of the U.S. hostile policy toward it,” said the spokesman in the statement published by the North‘s Korean Central News Agency (KCNA).

Bristled at the international move, the North on Friday threatened that it will sever its emergency hotline with Seoul and nullify non-aggression agreements between the two countries.

Reiterating its long-standing argument that rocket launches and nuclear tests aim to “defend its sovereignty and vital rights,” the North warned that the resolution will “only result in bolstering of its nuclear deterrent qualitatively and quantitatively.”

Vowing to take “stronger countermeasures in succession and a great war for national reunification,” Pyongyang also said it will “reinforce (itself) as a nuclear weapons state and satellite launcher” in response to the U.N. resolution.

A commentary moved by the North‘s Cabinet newspaper Minju Joson also warned the U.S. of facing “deadly blows that it had never experienced” for the annual Seoul-Washington military exercises.

Calling the joint exercise “nuclear war maneuvers and the most disguised military provocation to mount a preemptive strike at it,” the North said it will “fight a real war” with the U.S, according to the separate KCNA report citing a bylined commentary by the newspaper.

The two-month field training exercise Foal Eagle kicked off last week and computer-simulated drills known as Key Resolve will be held from March 11-21. The South has said the joint war drills are only defensive in nature.

“We have already taken up posture for an all-out action according to the operational plan finally signed by Supreme Commander Kim Jong-un to annihilate the enemies,” it said, adding the belligerent action aims to “defend the sovereignty and dignity of the country.”(Yonhap News)