Senior Fellow @OxMartinSchool/@UniofOxford | Chair-Hamburg Sustainability Conference | Former UN Under Secretary-Gen & Head of @UNDP | @UNEP |@IUCN | WCD
Joined June 2015
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8,198 Photos and videos
2 Dec 2025
My heartfelt congratulations - @alexanderdecroo - as you begin your tenure today as @UNDP Administrator. I wish you all the best as you navigate these times of change and join the @UN and an amazing team and organisation at the core of the sustainable development promise!
2 Dec 2025
“The world is changing fast, and our partners are changing with it. Development must change too.”
Today, @alexanderdecroo begins his role as our new Administrator.
Welcome to UNDP!
go.undp.org/i6i
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6 Sep 2025
With @fionaharvey of The Guardian I explored the implications for national security of a singular focus on investing in a ‘defense and deterrence’ track while defunding international cooperation through a ‘development and resilience’ track. theguardian.com/environment/…
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16 Jun 2025
It is with profound gratitude that I say ‘thank you and goodbye’ today to my colleagues in @UNDP and the @UN family.
It has been my honour to be part of this incredible organization for the last 8 years. 🙏
go.undp.org/U2Q
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16 Jun 2025
The 🌍 needs transformative solutions for our modern challenges.
That's why @UNDPAccLabs was founded & what it's managed to do by connecting grassroots innovators to global policy makers. In @devex, I explain how their breakthroughs can turn the tide.
bit.ly/3G69hoa
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16 Jun 2025
We live in a world with $480 trillion in assets yet only 4% of those assets go to low- and middle-income countries.
Imagine what we can do if we derisk investments & unlock private sector potential. @UNDP @UNCDF
My oped in @Planeta_Futuro | bit.ly/45mfG9f
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16 Jun 2025
A final and heartfelt farewell call with @UN SG @antonioguterres.
Eight years ago you invited me to join your team as @UNDP Administrator.
Thank you for your unwavering commitment and dedication to multilateralism and peace. It’s been an honour to serve within the @UN family.
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13 Jun 2025
Saying goodbye is never easy. As I end my time as @UNDP Administrator, I wish to share a special 🙏to all our colleagues who every day give their all for #SustDev.
Meeting & listening to you reflect on our shared journey these past few days has been amazing! You are the FUTURE!
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13 Jun 2025
HDRO @HDRUNDP
Bureau for Policy & Programme Support
Crisis Bureau @UNDPCrisis
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15 Jun 2025
As I close this chapter, I speak with host Nadira Hira about my time leading @UNDP for the past 8 years.
I believe that development is the doorway of opportunity for people to lead lives of their choosing.
My full interview: go.undp.org/U2Q
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14 Jun 2025
Tomorrow, my last interview as Administrator will air. I speak with host Nadira Hira about some of the most memorable experiences during my time leading @UNDP & our hosted entities @UNVolunteers, @UNCDF, @UNOSSC & @MPTFOffice. Great moments, sobering moments, but never in vain!
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Achim Steiner retweeted
12 Jun 2025
Op-ed | South Africa holds some of the world’s richest biodiversity, but too few benefit from it.
In her opinion piece, @UNDP🇿🇦head of Nature Climate Energy, Deshni Pillay, calls for inclusive nature finance to turn conservation into opportunity.
Read: bit.ly/4kEIizm
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13 Jun 2025
Thanks to core support from Denmark, @UNDP is driving progress across the globe - accelerating efforts to end poverty, respond to crises & advance the #GlobalGoals.
Together, we’re building a more resilient & sustainable future for all. go.undp.org/U2f #PartnersAtCore
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13 Jun 2025
One last opportunity to say farewell &🙏🏼to @UN DSG @AminaJMohammed. As both @UN_SDG Vice Chair & @UNDP Administrator, UN Reform & the #SDGs were a constant in our endeavour to advance #SustDev.
I am grateful for her leadership in championing SDG implementation & advocacy.
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Achim Steiner retweeted
12 Jun 2025
The scale of global crises is staggering - 1.2 billion people are vulnerable to climate change and over 305 million people need humanitarian aid.
Support from our donors allows us to respond immediately and support long-term recovery.
go.undp.org/UBn
#FundingWindows
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13 Jun 2025
I was honoured to meet our @UNDPPalestinian colleagues in an online townhall. Their voices are heard loud and clear. I join in their sorrow following the killings of Ramzi Khader, Issam Al Mughrabi and their families.
@UNDP stands in full solidarity with this courageous team.
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13 Jun 2025
The ocean sustains all life on Earth. It covers 71% of our planet & holds 97% of its water. It feeds billions of people.
But it's under threat from overfishing, pollution & climate change. @UNDP and @francediplo_en partner to #SaveOurOcean & support communities.
#PartnersAtCore
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13 Jun 2025
Effective & accountable institutions equipped for gender equality lead the way in human & sustainable development.
👏Congratulations to the winners of @UNDP's #GenderEqualitySeal for driving gender-responsive reforms across sectors.
Learn more: go.undp.org/UXi
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