China's top legislature on Friday ratified the protocol to the Treaty on Nuclear-Weapon-Free Zone (NWFZ) in Central Asia.

After approving the protocol, the National People's Congress Standing Committee declared that no security protocol or treaty will undermine the status of the NWFZ, and all explanations and applications of the clauses in the protocol shall support the goal of the building of the NWFZ in Central Asia.

The protocol was signed by representatives of China, France, Russia, the United Kingdom and the United States on May 6, 2014 in New York, the United States.

The protocol provides legally-binding assurances not to use or threaten to use nuclear weapons against parties to the NWFZ parties.

Enacted in 2009, the Treaty commits the signatories, Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan, to refrain from developing, acquiring or possessing nuclear weapons.