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States Parties


Guinea-Bissau participated in the First Meeting of States Parties to the TPNW (1MSP) in Vienna in June 2022. On 23 June, the last day of the 1MSP, Guinea-Bissau brought into force both a Comprehensive Safeguards Agreement (CSA) and an Additional Protocol with the IAEA. The CSA was brought into force well in advance of Guinea-Bissau’s 18-month deadline under Article 3(2) of the TPNW.

TPNW Status

26 Sep 2018
15 Dec 2021 (Ratification)
15 Mar 2022
Received 23 Feb 2022
TPNW Article 1(1) prohibitions: Compliance in 2022
(a) Develop, produce, manufacture, acquire Compliant
Test Compliant
Possess or stockpile Compliant
(b) Transfer Compliant
(c) Receive transfer or control Compliant
(d) Use Compliant
Threaten to use Compliant
(e) Assist, encourage or induce Compliant
(f) Seek or receive assistance Compliant
(g) Allow stationing, installation, deployment Compliant
TPNW voting and participation
UNGA resolution on TPNW (latest vote) Voted yes (2023)
Participated in 1MSP (2022) Yes
1MSP delegation size (% women) 1 (0%)
Adoption of TPNW (7 July 2017) Voted yes
Participated in TPNW negotiations (2017) Yes
Negotiation mandate (A/RES/71/258) Did not vote
Other weapons of mass destruction (WMD) treaties
Party to an NWFZ Yes (Ratified 2012, Pelindaba)
Party to the NPT Yes (Acceded 1976)
Ratified the CTBT Yes (Ratified 2013)
Party to the BWC Yes (Acceded 1976)
Party to the CWC Yes (Ratified 2008)
IAEA safeguards and fissile material
Safeguards agreement Yes (23 Jun 2022)
TPNW Art 3(2) deadline 15 Sep 2023 (Met 23 Jun 2022)
Small Quantities Protocol Yes (Modified)
Additional Protocol Yes
Enrichment facilities/reprocessing plants No
HEU stocks No
Plutonium stocks No

Latest developments

Guinea-Bissau was one of the co-sponsors for the 2022 UN General Assembly resolution on the TPNW, which called upon ‘all States that have not yet done so to sign, ratify, accept, approve or accede to the Treaty at the earliest possible date.'1

Marking the International Day for the Total Elimination of Nuclear Weapons on 26 September 2022, the African Group in the UN, of which Guinea-Bissau is a member, recalled the entry into force of the ‘landmark’ TPNW and reaffirmed its ‘full support’ for the declaration and action plan adopted at the 1MSP. The African Group, moreover, urged ‘all members of the international community, especially nuclear-weapon states and those under the so-called nuclear umbrella, to seize the opportunity to sign and ratify the Treaty at an early date and to pursue the goal of a nuclear-weapon-free world’.2


  • Guinea-Bissau should continue to encourage other states to adhere to the TPNW.

  • Guinea-Bissau should ensure that all the TPNW obligations are implemented domestically, through legal, administrative, and other necessary measures.

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