When is the UN Summit starting? What's on the agenda? What are the highlights? Who is attending?
The UN General Assembly High-Level Week is happening right now, with the General Debate opening today, September 22, 2026, in New York.
Here's the answer from Mary's digital twin. The gray check mark turns green once Mary has confirmed it.
What this is and why it matters
The UN General Assembly (UNGA) is the main policy-making body of the United Nations, where all 193 member countries have an equal vote. Think of it as the world's town hall, the one place where every nation, large or small, gets the same seat at the table. The High-Level Week is when presidents, prime ministers and senior diplomats actually show up in person.
The 81st session formally opened on September 8, 2026, while the high-level General Debate runs from September 22 to 28, 2026. The wider high-level programme extends to September 29, with a meeting on the total elimination of nuclear weapons scheduled for that final day.
The theme and who is running it
Khalilur Rahman of Bangladesh is presiding over the 81st session, under the theme "Restoring trust, managing transformation: A United Nations that delivers for all."
From conflicts and humanitarian crises to runaway artificial intelligence, climate action, sustainable development and economic resilience, this year's debate is expected to spotlight the urgent need for renewed multilateral cooperation in an increasingly fragmented world.
What's on the agenda
The General Debate sits inside a wider high-level programme addressing climate action, sea-level rise, pandemic preparedness, development and racial justice.
A few specific highlights stand out:
- Climate Summit: Convened by UN Secretary-General António Guterres, it brings together leaders from major economies, developed and developing countries, vulnerable nations, and major energy producers. Ten years after the Paris Agreement, the climate crisis has entered a new phase in which overshoot is now considered inevitable, even as the energy transition accelerates.
- Rising sea levels: On September 24, world leaders will specifically address the existential threats posed by rising sea levels.
- Nuclear Weapons disarmament: The programme concludes on September 29 with a meeting marking the International Day for the Total Elimination of Nuclear Weapons, focusing on continuing efforts toward a world free of nuclear weapons.
- SDGs: The Sustainable Development Goals are a set of 17 targets the UN set for 2030, covering poverty, health, education and climate. Key meetings on climate action, sea level rise and pandemic response are woven throughout the week, and this year's SDG Moment spotlights transformative initiatives and inclusive transitions as a milestone on the road to the 2027 SDG Summit.
- Democracy and multilateralism: The EU, together with co-sponsors Australia, Barbados, Brazil, Canada, India and Kenya, launched a "Partners for Multilateralism" initiative for countries committed to working together in support of peace, stability and inclusive development.
Who is attending
The world's attention is on New York this week as presidents, prime ministers, diplomats and senior government officials converge at UN Headquarters. Two platforms are running alongside the speeches: the SDG Media Zone with interviews and panel discussions on SDG solutions, and the Goals Lounge, featuring unscripted dialogues and deep dives into vital issues. Events are live-streamed on UN WebTV.
Follow-ups
What is Khalilur Rahman's role or position in Bangladesh that led to his appointment as UNGA president?
Khalilur Rahman came to the UNGA presidency as Bangladesh's Foreign Minister, a role he stepped into in February 2026 after a long career in diplomacy.
A career diplomat, Khalilur Rahman has served as Foreign Minister of Bangladesh since February 2026. Before that he held the posts of National Security Adviser and High Representative for the Rohingya Issue in Bangladesh's Interim Government.
He took the foreign minister role when the Bangladesh Nationalist Party won the country's first election since a student-led uprising ousted longtime leader Sheikh Hasina in 2024. So the government behind him is itself relatively new, which made his candidacy a statement of confidence in Bangladesh's fresh political direction.
How deep the diplomatic roots go
A career diplomat, he joined Bangladesh's foreign service in 1979 and also held senior UN positions in New York and Geneva. Those positions included serving as spokesperson for the Least Developed Countries and as special adviser to the UN Conference on Trade and Development (UNCTAD, the UN body focused on trade and economic development for poorer nations). He has, in other words, been inside the UN system for decades.
Why he won
In a closely contested secret ballot, Rahman secured 99 votes out of 190, defeating Andreas Kakouris of Cyprus, who obtained 91. His election marks only the second time Bangladesh has held the UNGA presidency, with the country last holding it during the 41st session in 1986 to 1987.
The UNGA presidency rotates annually among five regional groups, and for the 81st session it was the Asia-Pacific Group's turn. That rotation opened the door; Rahman's decades of multilateral experience and his standing as a sitting foreign minister were what walked him through it.
IS Ai not included in the Summit Agenda?
AI is one of the most prominent items at this week's UN General Assembly High-Level Week in New York, treated not as a side topic but as a potential civilisational risk.
The previous answer covered this in detail, but here is what is shaping the conversation right now.
António Guterres, the UN Secretary-General, has described runaway AI as one of three existential threats facing the world, alongside the climate crisis and deepening inequality. He dedicated nearly half his pre-session remarks to AI, acknowledging its "enormous potential" on health, education and climate, while stressing that the world "cannot afford to ignore concerns" that development is outpacing human understanding of the risks.
With fears mounting of an AI arms race between the US and China, Guterres acknowledged "geopolitical divides" and warned that voluntary pauses on AI development will not work if they are limited to only a few countries.
There is an institutional dimension too. The 15-member UN Security Council is expected to hold high-level meetings on AI during the gathering. And the General Assembly has already moved beyond speeches: it appointed 40 members to the Independent International Scientific Panel on Artificial Intelligence, with the vote recorded at the request of the United States.
Where the real tension sits
The gap between what Guterres wants and what the major powers are willing to do is wide. Analysts note that the US and EU members are "not really engaging" with UN-led AI governance, with companies like Anthropic and OpenAI running their own parallel conversations about the technology's future. Meanwhile, President Donald Trump has dismissed AI risks as a "hoax."
So the summit has the scaffolding for a serious AI conversation, a dedicated Security Council session, a new scientific panel, and a secretary-general willing to call it an existential threat. Whether the major powers actually coordinate is the open question, and that is precisely the kind of thing that never gets fully resolved in one week in New York.
What are some highlights from today's sessions
The opening day of the UN General Assembly High-Level Week General Debate brought two sharply contrasting speeches, a stark warning from Secretary-General António Guterres, and a diplomatic undercurrent running through over a thousand side meetings happening in parallel across New York.
Who opened and what they said
Luiz Inácio Lula da Silva, President of Brazil, opened the high-level debate, followed by US President Donald Trump. Brazil goes first by tradition kept since 1955. Lula advocated for negotiations as the means of resolving disputes and for respect for international humanitarian law. He also arrived with a pointed personal message: at a rally held before the trip, Lula said he would tell Trump at the UN, "do not interfere in Brazil's elections," with Brazilian voters heading to the polls in October. On the Middle East, he said that "generations of Palestinians" will carry "the pain and trauma left by the genocide of women and children," criticizing the expansion of Israeli settlements in the West Bank.
Trump's address covered a lot of ground fast. He gave a wide-ranging speech covering the war in Iran, Greenland and Cuba. The sharpest moment came on Iran: he said "the United States and Iran will definitely get it done, one way or the other," framing it as a choice between a deal or destruction. He also accused Iran of stalling on a deal to fully reopen the Strait of Hormuz and negotiate an endgame to the war until after the US midterm elections. On AI, the Trump administration announced it will convene a high-level event on AI on the sidelines of UNGA this week.
What Guterres framed for the whole week
Secretary-General Guterres warned the General Assembly that humanity faces four defining "tests of power," around war or peace, inequality, climate change and AI, that will determine whether the world moves toward a new era of cooperation or deeper division. This is also a personally significant moment for him: the 81st session is the final General Assembly session to begin under Guterres as Secretary-General, as his second and final term ends on December 31, 2026.
The diplomacy running beneath the speeches
More than 1,000 bilateral meetings between member states are taking place during this year's high-level debate. That number tells you something the cameras rarely capture: the speeches on the floor are often less consequential than what happens in the corridors and hotel suites around them. Middle Eastern nations are using the gathering for intensive diplomatic talks aimed at finding solutions to regional conflicts, particularly the Iran war. Trump is also expected to meet with Volodymyr Zelensky, President of Ukraine, while an Iranian delegation is in New York.
What is still ahead this week
The UN has scheduled high-level meetings on climate action and a just transition and on the 40th anniversary of the Durban Declaration on the Right to Development on September 23, on sea level rise on September 24, on pandemic preparedness on September 25, on the 25th anniversary of the Durban Declaration against racism on September 28, and on eliminating nuclear weapons on September 29. Each of those is a focused session where leaders sign statements, make pledges or push specific negotiations forward, not just speechmaking.
The people shaping what comes next are already in the room.
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