Story highlights North Korea says its nuclear program is "not a plaything to be put on the negotiating table"

The U.S. has said North Korea needs to commit to denuclearization for talks to happen

(CNN) North Korea says it has no interest in talks like those that resulted in a nuclear deal last week between Iran and world powers.

The North Korean and Iranian situations are "quite different," a spokesman for North Korea's Foreign Ministry said Tuesday, according to the state-run Korean Central News Agency.

The official reiterated North Korea's assertion that it is a "nuclear weapons state both in name and reality."

"The DPRK is not interested at all in the dialogue to discuss the issue of making it freeze or dismantle its nukes unilaterally first," the spokesperson said, using an abbreviation of the Democratic People's Republic of Korea, the country's official name.

North Korea's nuclear deterrent is "not a plaything to be put on the negotiating table, as it is the essential means to protect its sovereignty and vital rights from the U.S. nuclear threat and hostile policy which have lasted for more than half a century," the official said.

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