Sotirios Markopoulos

CTBTO, SC Rep & Systems Specialist | UN DIN VIC, President | FICSA, Vicechair SocSec Commitee -
Personal tweets

[CTBTO @CTBTO]

🌏 Tonga has signed and ratified the #CTBT, completing universalisation of the Treaty
across the Pacific region. The ceremony took place on Tuesday, 7 July at UN Headquarters in New York, a landmark moment for 🇹🇴, for the Pacific, and for the global effort to ban nuclear test explosions. The Treaty now counts 188 States Signatories and 179 ratifying States.
https://t.co/AuWm3cA7B2

[Robert Floyd @DrRobFloyd]

This is an amazing achievement! So proud of my colleagues.

[CTBTO @CTBTO]

Support for the #CTBT is nearly universal. With 187 signatures & 178 ratifications, the 🌍 determination to end nuclear test explosions is more powerful than ever. As the Treaty marks its 30th anniv. year, we stand together to reaffirm that commitment.
One Treaty. One Goal. Zero Tests.
https://t.co/MjaxVDHnyo

[UN Disability Inclusion Network (DIN) VIC @UN_VIC_Disabil]

https://t.co/d9MMiAx4QS

Today, on World Autism Awareness Day, we celebrate the power of neurodiversity and the importance of building truly supportive workplaces.

At the @UN_VIC_Disabil, we believe that different ways of thinking, processing, and experiencing the world...

[CTBTO @CTBTO]

The #CTBTO’s International Monitoring System (IMS) recorded a seismic event south of Bid Shahr, Fars province, #Iran 🇮🇷, on 3 March 2026 at 06:55 UTC (IDC mb 3.9). The waveforms of this event are consistent with a natural earthquake in a seismically active region. This analysis is based on data from 17 primary seismic and 10 auxiliary seismic stations across the IMS network.

[UN Disability Inclusion Network (DIN) VIC @UN_VIC_Disabil]

Ein bedeutsamer Moment für das UN Disability Inclusion Network VIC: Während der @ZeroProjectorg #ZeroConf26 Konferenz hatten wir die Gelegenheit, Österreichs Sozialministerin, Frau Korinna Schumann ( @SchumannKorinna), zu treffen.

[UN Disability Inclusion Network (DIN) VIC @UN_VIC_Disabil]

Last week, during #ZeroConf26 at the VIC, the UN DIN VIC welcomed high-level representatives to its booth.
The visitors included Acting DG/ED UNOV/@UNODC, Mr @JohnBrandolino, DDG @UNIDO, Mr Yasunaga, ES @CTBTO, @DrRobFloyd, and DG @iaeaorg Rafael Grossi (@rafaelmgrossi).

[Sotirios Markopoulos @SotiriosMark]

Dear DG @rafaelmgrossi, thank you for your continued personal commitment to this important cause, and for the steadfast support of the @iaeaorg. Your leadership and engagement help drive meaningful progress toward a welcoming workplace for staff affected by disabilities.

[Rafael Mariano Grossi @rafaelmgrossi]

Visited the @un_vic_disabil booth at the Zero Project Conference #ZeroCon26 to renew the continued efforts to advance accessibility and create a welcoming workplace for professionals with disabilities and their families. We all have a role to play and the @IAEAorg remains, as always, committed to this work.

[Sotirios Markopoulos @SotiriosMark]

We are sincerely grateful to @DrRobFloyd for taking the time to visit us at #ZeroCon26. His presence and engagement meant a great deal to us.
We also thank him personally — and the @CTBTO as an organization — for their continued and steadfast support.

[CTBTO @CTBTO]

Today at #ZeroCon26, @DrRobFloyd was warmly welcomed by members of the United Nations Disability Inclusion Network VIC, @UN_VIC_Disabil. The Executive Secretary commended their steadfast commitment and reaffirmed the importance of their role in advancing #DisabilityInclusion

[CTBTO @CTBTO]

Read #CTBTO Executive Secretary @DrRobFloyd's full statement on the recent public remarks that draw attention to ongoing concerns about nuclear weapons testing. https://t.co/v0nKe6YSAA

[CTBTO @CTBTO]

On this #UNDay – and every day – the #CTBTO helps deliver on the UN peace and security pillar through monitoring and analysis that support the global ban on nuclear testing, protecting people, today and tomorrow.

[CTBTO @CTBTO]

The UN Disability Inclusion Network (@UN_VIC_Disabil) hosted its 2nd #Neurodiversity event, with opening remarks by UK Amb. @corinnekitsell and inspiring insights from Consultant Psychiatrist Khurram Sadiq on the benefits of including neurodivergent people in the workplace. With 300 staff from 90+ countries, at #CTBTO we strive to build supportive environments where everyone can thrive. More ➡️ https://t.co/2Aqiwss7Ls

[UN Disability Inclusion Network (DIN) VIC @UN_VIC_Disabil]

The UN DIN VIC (@UN_VIC_Disabil) is proud to host our second event with renowned author and #neurodiversity expert Dr Khurram Saadiq (@MentesSerena) with opening remarks by H.E. Corinne Kitsell (@corinnekitsell) Ambassador and UK Permanent Representative to the IAEA and CTBTO.

[CTBTO @CTBTO]

📢 Live from Vienna’s Hofburg Palace
The High-Level Plenary ushers in the in-person segment of #SnT2025 after the online opening day. With remarks from @DrRobFloyd & statements from 🌎 partners, this flagship session brings together leaders in science and diplomacy.
🗓 Tue 9 Sept | 10:00–12:45
📍 In person & online
🔗 Details & registration: https://t.co/Qw4oj70Vdq

[Mukhtar B. Tileuberdi @MBTileuberdi]

Thanks to @CTBTO, @unodavienna & @Kazakhstan_AT for joint commemoration of #IDANT at Vienna International Center. “Why 29 August?” - on 29.08.1949 #USSR conducted 1st nuclear test at Semipalatinsk nuclear test site in #Kazakhstan and on 29.08.1991 this site was permanently closed

[CTBTO @CTBTO]

No more nuclear tests. Not now. Not ever.
On this #InternationalDayAgainstNuclearTests, we reflect on the human & environmental toll of nuclear testing, and the 🌍 effort to end it.
🎥 Watch @DrRobFloyd's message marking #IDANT and reaffirming the need to bring #CTBT into force.

[CTBTO @CTBTO]

In what kind of world do you want to live?🌍Our colleagues share their vision - and how ending nuclear testing brings us closer to it. Ahead of #IDANT, watch our new explainer and see how the CTBTO works for a peaceful and secure future. 🕊️
#InternationalDayAgainstNuclearTests

[UN Vienna @UN_Vienna]

People with autism often experience isolation, stigma and inequality. On #WorldAutismAwarenessDay, let us commit to inclusive healthcare, education systems and work environments to ensure that people with autism can thrive.
Read more by @antonioguterres - https://t.co/YzGKzxdyv3

[UN Disability Inclusion Network (DIN) VIC @UN_VIC_Disabil]

Neurodiversity Week at Vienna International School – A Meaningful Collaboration!

On 18 March, the UN Disability Inclusion Network (DIN) VIC (@UN_VIC_Disabil) had the honor of partnering with Vienna International School (@VIS_Austria) to celebrate its Neurodiversity Week.

[Beate Meinl-Reisinger @BMeinl]

Glad to meet @CTBTO Executive Secretary @DrRobFloyd @UN_Vienna. #Austria stands firm with 187 signatory states to put an end to #nucleartesting. Impressed how #CTBT & its International Monitoring System #IMS contribute to making the world safer! #TsunamiWarning #ClimateResearch