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The United States will no longer play global policeman, and no one else wants the job. This is not a G-7 or a G-20 world. Welcome to the GZERO, a world made volatile by an intensifying international battle for power and influence. Every week on this podcast, Ian Bremmer will interview the world leaders and the thought leaders shaping our GZERO World.

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Former President Trump stares into the crowd at the RNC and GZERO World with ian bremmer - the podcast

Trump's close call and the RNC: Brian Stelter and Nicole Hemmer weigh in on a historic week in US politics

Listen: In the latest episode of the GZERO World Podcast, Ian Bremmer reflects on this pivotal week in US politics and welcomes back media journalist and former CNN show host Brian Stelter on the show alongside Vanderbilt political historian Nicole Hemmer. Former President Trump narrowly survived an assassination attempt, picked his VP candidate, presided over a united GOP at the Republican Convention, and all while a Democratic Party in disarray continued to clamor for Biden to step aside.


Listen: We're watching history happen in real-time. Never before was that fact more apparent than this week, when former President Trump narrowly survived an assassination attempt, picked his VP candidate, presided over a united GOP at the Republican Convention, and all while a Democratic Party in disarray continued to clamor for Biden to step aside.

It's amazing that the afterthought for the week is whether the sitting President will remain on the ticket for an election just months away. But that's where we are.


In the latest episode of the GZERO World Podcast, Ian Bremmer reflects on this pivotal week in US politics and welcomes back media journalist and former CNN show host Brian Stelter on the show alongside Vanderbilt political historian Nicole Hemmer. “We're living in a period of escalating political violence and social and political instability,” Hemmer tells Bremmer. “That was true in the late 1960s and early 1970s, and I think that it's true today."

In a wide-ranging conversation that touches on all the major news of the week, Hemmer and Stelter dig into the political divisions that led to this moment of horrific political violence. “The real divides are not between Democrats and Republicans, although those are real” Stelter adds. “But the biggest divide that we're seeing is between extremists and those who are moderates, the great silent majority."

Both guests also comment on the media's role in this fraught environment, with Hemmer critiquing prediction-focused coverage and Stelter advocating for better representation of casual news consumers and politically fatigued voters. The three also discuss the likelihood of Biden stepping down, an eventuality that Stelter argues is inevitable. “It is clear the Democratic Party elites are not with Biden. And I don't see that tide turning. I don't see how it changes.”

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Bioweapons, AI, and the end of the world, with Annie Jacobsen

For decades, nuclear war has represented the ultimate doomsday scenario. But investigative journalist and author Annie Jacobsen says biological warfare may pose an even greater overall threat. Unlike nuclear weapons, which require tightly controlled materials, enormously expensive delivery systems, and specialized expertise, the barriers to developing biological weapons can be far lower. And artificial intelligence could lower them further.

Ian Bremmer sits down with Jacobsen to discuss how AI is changing the landscape of catastrophic risk. As increasingly powerful models make sophisticated scientific knowledge easier to access, they could allow bad actors to bypass years of specialized training and dramatically shorten the path from an idea to a potentially dangerous capability.

They also explore the struggle to govern a technology developing faster than regulators can respond, the gaps in existing AI safeguards, and what governments and tech companies could do to identify dangerous vulnerabilities before they are exploited. And they step back to a larger question at the heart of Jacobsen’s work: Why does humanity keep developing technologies with the potential to threaten its own survival – and can our ability to manage those risks ever catch up with our ability to create them?

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The enduring legacy of 9/11, with former Defense Secretary Mark Esper


This week marks 25 years since 9/11—the deadliest terror attack the world has ever seen and a defining moment in American history. The attacks transformed US politics and national security. The war on terror became the organizing principle of American foreign policy. Former Secretary of Defense Mark Esper joins Ian Bremmer on the GZERO World Podcast to reflect on the day that forever changed how Americans thought about national security, and how the United States wielded its enormous power around the world.
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The race to build humanity's future in space, with Chris Hadfield

More than half a century after humans last walked on the Moon, the next era of space exploration is taking shape. Getting there is cheaper, private companies are playing a much bigger role, and discoveries like vast reserves of lunar water have made the prospect of establishing a permanent presence on the Moon far more realistic.

Ian Bremmer sits down with Canadian astronaut Chris Hadfield to talk about what this new space age could look like. They discuss the growing competition between the US and China, whether rivals can cooperate on the lunar surface, and who gets to write the rules as governments and companies begin looking beyond simply planting a flag.

Hadfield also breaks down the practical challenges of living on the Moon – from powering a settlement through long lunar nights to the unanswered question of whether humans can develop normally in low gravity. He explains how private companies are turning space into a commercial marketplace, why regulation will inevitably struggle to keep pace, and why robots alone can never satisfy humanity’s drive to explore Mars.

And drawing on nearly six months aboard the International Space Station, Hadfield reflects on the surprisingly wonderful experience of sleeping in zero gravity, circling Earth 2,600 times, and how seeing the planet from above fundamentally changed his perspective on humanity and our place in the universe.

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The global aid crisis, with David Miliband

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