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State with nuclear-free security policy

Iran voted in favour of adopting the TPNW at the UN Diplomatic Conference in 2017, but has not yet adhered to the Treaty. If Iran were today a party to the TPNW, there would be issues of possible compliance related to the prohibition on development, which would need to be addressed by a meeting of states parties. The Nuclear Weapons Ban Monitor has therefore listed Iran as a state of concern.

TPNW status
Not signed, not ratified, not acceded
Compatibility with prohibitions in TPNW Article 1(1)
Art 1(1)(a) Develop, produce, manufacture, acquire Of concern
Test Compatible
Possess or stockpile Compatible
Art 1(1)(b) Transfer Compatible
Art 1(1)(c) Receive transfer or control Compatible
Art 1(1)(d) Use Compatible
Threaten to use Compatible
Art 1(1)(e) Assist, encourage or induce Compatible
Art 1(1)(f) Seek or receive assistance Compatible
Art 1(1)(g) Allow stationing, installation, deployment Compatible
TPNW voting and participation
Vote on negotiation mandate (A/RES/71/258) Voted yes
Participated in treaty negotiations (% women) Yes (0%)
Vote on adoption of treaty text Voted yes
Last vote on UNGA resolution Voted yes
Fissile material
Fissile material production facilities Yes
Highly enriched uranium stocks 1–10 kg
Plutonium stocks (military/civilian) No/No
Related treaties and regimes
Party to the NPT Yes
Party to a NWFZ No
Ratified the CTBT No (Signed, Annex 2 state)
Party to the PTBT Yes
Member of the CD Yes
IAEA CSA in force Yes
IAEA AP in force No (Signed 2003, provisionally applied)
Party to the CWC Yes
Party to the BWC Yes

Latest developments

Iran has consistently voted in favour of the UN General Assembly resolutions on the TPNW in 2018, 2019, and 2020. In response to targeted assassinations of Iranian officials, apparent acts of sabotage against Iran’s nuclear installations, and the United States' violation of the JCPOA, Iran has taken steps to expand its nuclear programme, reneging on obligations stipulated in the Iran deal. It is to be hoped that the two sides, following the US presidential elections, will change track and return to diplomacy. See:,


  • Iran should urgently sign and ratify the TPNW, and encourage other states to adhere to the Treaty.
  • Iran should return to compliance with the JCPOA, and permanently bring into force its Additional Protocol (AP) with the IAEA. Iran should also ratify the CTBT.
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