Why Trump resurrected the Monroe Doctrine

Summary

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Podcast Summary: "Why Trump Resurrected the Monroe Doctrine"

The Indicator from Planet Money (NPR)
Air date: January 15, 2026
Hosts: Waylon Wong, Darian Woods
Guests: Jay Sexton (historian), Javier Blass (Bloomberg columnist)

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Episode Overview

This episode explores President Donald Trump’s revival and reinterpretation of the Monroe Doctrine—a nearly 200-year-old U.S. foreign policy—now informally dubbed the "Donroe Doctrine." The hosts and expert guests examine how historical doctrines about influence in the Western Hemisphere are being invoked to justify new U.S. interventionism, especially in energy-rich countries like Venezuela. They delve into the economic motivations, historical context, and potential consequences of America’s renewed assertiveness in its neighboring hemisphere.

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Key Discussion Points & Insights

1. The Return of the Monroe Doctrine—"Donroe Doctrine"

• Trump’s Social Media Post: The episode opens with Trump’s tongue-in-cheek Truth Social post describing himself as Venezuela’s "acting president," signaling his aggressive approach to hemispheric policy (00:14).
• Modern Spin: The hosts explain that Trump’s administration draws deliberate parallels to the historic Monroe Doctrine, which warned European powers to stay out of the Western Hemisphere (00:27–00:44).
• Evolution of the Doctrine:
  • Originally not a formal law, just a line in President James Monroe’s 1823 message to Congress (02:32, Jay Sexton):

    “The original Monroe Doctrine is not law. It's not statute, it's not international law. It's just like what one president wrote in a message to Congress.”

  • Over the next two centuries, it was reinterpreted to justify both anti-imperialist and imperialist policies (03:12–04:03).

2. The Historic and Political Context

• From Caution to Imperialism:
  • In the 1840s, President James Polk used the doctrine to justify the annexation of California (03:29).
  • Theodore Roosevelt’s “corollary” justified interventions in Central America and the Caribbean (03:49–04:03).
• The "Donroe Doctrine":
  • Today, the Trump administration is shifting U.S. policy away from global cooperation and back toward regional spheres of influence, largely in response to Chinese investments and influence in Latin America (04:17–04:47, Jay Sexton):

    “Spheres of influence are coming back. The Monroe Doctrine has a new place in American foreign policy and in American politics.”

3. Economic Motives & Venezuela

• National Security Framing:
  • Recent White House documents emphasize hemisphere security, deterring migration, fighting criminal networks, and protecting supply chains (05:02–05:23).
• Oil and Economics:
  • Javier Blass explains that U.S. intervention in Venezuela is a move to safeguard vital oil supplies and keep prices low. The implied policy: If resources in the Americas seem threatened, the U.S. will act—by force if necessary (05:38–06:08):

    “This is not an optional security umbrella. As long as you are in the Americas, you are under it whether you like it or not.” – Javier Blass (06:08)

• Trump’s Longstanding Obsession with Oil:
  • The hosts and Blass highlight Trump’s personal fixation on low oil prices, rooted in his real estate background—the logic being: low oil keeps inflation down and interest rates low, which is good for business (06:22–06:51).

    “Like really, that's why we bombed Caracas and captured Nicolas Maduro — because on Trump's mind, the cost of a mortgage needs to be low…” – Javier Blass (06:51)

• White House Response: The administration officially denied oil as the motive, citing border security and drug trafficking instead (07:13).

4. Comparison: Past vs. Present US Interventions

• Transparency about Motives:
  • Whereas previous U.S. interventions (like in Iraq, 2003) had official justifications different from economic ones, under the Donroe Doctrine the economic rationale (oil) is more openly discussed (07:29).
• Geopolitical Impacts:
  • Trump’s policies cover vast oil-producing regions, making U.S. oil supply less vulnerable to instability elsewhere and emboldening U.S. foreign policy (07:46–08:06):

    “All of that is allowing a more assertive foreign policy...one of the main constraints...was what is the impact if we bomb, for example, Iran...Oil has been in the minds of American military and diplomats for a very long time...” – Javier Blass (08:06)

5. Broader Regional Ambitions

• Beyond Venezuela:
  • Examples of U.S. assertiveness include pressuring Panama over the canal, talks of making Canada the 51st state, and renewed speculation about acquiring Greenland (08:41–09:12).
• Interventionist Vision and Its Risks:
  • Historian Jay Sexton warns of the inevitable chaos of upending sovereign governments and the U.S. responsibility for the aftermath:

    “If you're going to depose leaders of sovereign states, then the chaos that unfolds, you're going to have some responsibility for managing it. And I think that's where we're at right now in the current implementation of this new Donroe doctrine.” – Jay Sexton (09:12)

• The “Pottery Barn Rule”:
  • Darian Woods references the adage, “If you break it, you own it,” raising questions about U.S. willingness to deal with the consequences of intervention (09:42).

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Notable Quotes & Memorable Moments

• [02:32] Jay Sexton: “The original Monroe Doctrine is not law. It's not statute, it's not international law. It's just like what one president wrote in a message to Congress.”
• [04:47] Jay Sexton: “No longer the sort of global hegemon that's able to preside over this global system. Spheres of influence are coming back. The Monroe Doctrine has a new place in American foreign policy and in American politics.”
• [06:08] Javier Blass: “Oh, yes. This is not an optional security umbrella. As long as you are in the Americas, you are under it whether you like it or not.”
• [06:51] Javier Blass: “Really, that's why we bombed Caracas and captured Nicolas Maduro — because on Trump's mind, the cost of a mortgage needs to be low…”
• [08:06] Javier Blass: “Even when we see a lot of instability in producing areas, including the Middle east, prices remain relatively low. And all of that is allowing a more assertive foreign policy in America...”
• [09:12] Jay Sexton: "If you're going to depose leaders of sovereign states, then the chaos that unfolds, you're going to have some responsibility for managing it. And I think that's where we're at right now in the current implementation of this new Donroe doctrine."

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Timestamps for Key Segments

• 00:14 – Trump’s provocative social media post / Introduction to the modern Monroe Doctrine
• 02:32–04:03 – Historian Jay Sexton explains the origins, evolution, and modern usage of the Monroe Doctrine
• 04:17 – Transition from global cooperation to spheres of influence; U.S. reaction to Chinese investments
• 05:23–06:08 – The U.S. strategy on protecting resources in the Americas, military implications
• 06:22–07:13 – Trump’s economic motives: oil prices, mortgages, and U.S. intervention in Venezuela
• 07:29–08:06 – Differences from past interventions; “security umbrella” and impact on oil prices
• 08:41–09:12 – Discussion of expanding U.S. ambitions across the hemisphere
• 09:12–09:42 – Risks and responsibilities of intervention; the “Pottery Barn Rule”

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Conclusion

This episode offers a brisk yet thorough crash course in hemispheric geopolitics, tying together history, energy economics, and contemporary U.S. foreign policy. With clear-eyed analysis and sharp commentary from expert guests, the hosts reveal that the "Donroe Doctrine" is less a break from tradition than a reassertion of an old, enduring desire: to shape the fate of the Americas—by force if necessary, and for American interests above all.

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Transcript

[Javier Blass]

Npr.

[Waylon Wong]

This is the indicator from Planet Money. I'm Waylon Wong.

[Darian Woods]

And I'm Darian Woods. President Donald Trump posted on Truth Social this week what looked like a photoshopped Wikipedia page. This described him as the acting president of Venezuela.

[Waylon Wong]

This was maybe an unsurprising post from a president who not just loves being online, but is also throwing American muscle around. The administration's actions are a deliberate callback to a foreign policy from 200 years ago. It's called the Monroe Doctrine.

[Darian Woods]

The Monroe Doctrine is about which world powers get to exert influence in the Western Hemisphere. Different presidents have put their own spin on it, and. And now it's Trump's turn. It's being called the donroe Doctrine.

[Waylon Wong]

Today on the show, we look at how the Trump administration is putting the Don Row Doctrine into practice, especially when it comes to the president's desire for oil.

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[Darian Woods]

You know, when you add the word doctrine to anything, it sounds very serious and official.

[Waylon Wong]

Oh, for sure. A doctrine is like an official statement of a policy or principles. The origins of the Monroe Doctrine, though, were actually kind of casual. That's according to historian Jay Sexton. He's a professor at the University of Missouri, and he wrote a whole book on this.

[Jay Sexton]

The original Monroe Doctrine is not law. It's not statute, it's not international law. It's just like what one president wrote in a message to Congress.

[Darian Woods]

So the year is 1823. We've got the fifth president, James Monroe. He's delivering an annual message to Congress, and at one point, he mentions the United States. European rivals.

[Waylon Wong]

Yeah, these would have been countries like Britain and France. Monroe said any efforts by those countries to exert influence in the Western Hemisphere would be dangerous to the U.S. jay says Monroe's original idea had an anti imperialist bent to it because the President wanted European countries to butt out of the region.

[Jay Sexton]

And he says they can't extend their empires further in the Western Hemisphere. That's it doesn't say what the United States should do. Doesn't see this as the beginning of this like new pillar of foreign policy. It's not even understood to be a doctrine at the time. That happens like quarter century later.

[Darian Woods]

Jay's talking about the 1840s. That's when President James Polk wrote in his diary about Mr. Monroe's doctrine. And he used this policy as a way of bolstering American imperialism. Polk made the case that the US needed to take California from Mexico because if it didn't, then the British or the French would try to take it.

[Waylon Wong]

Then in the early 1900s, Theodore Roosevelt invoked the Monroe Doctrine to justify American intervention in Central America and the Caribbean. This policy is known as the Roosevelt.

[Darian Woods]

Corollary, another official sounding name.

[Waylon Wong]

Yeah, Corollary is something that naturally follows or runs parallel to another thing. And today we have the Trump Corollary to the Monroe Doctrine. The New York Post also referred to it as the Don Roe Doctrine last year, and the name has stuck.

[Darian Woods]

Jay says the Donroe Doctrine is part of the Trump administration's unraveling of the world order that the US helped set up in 1945. There's a move away from global cooperation and towards spheres of influence. That's when a powerful country like the US or China tries to dominate a foreign area.

[Waylon Wong]

Today, concerns over Chinese economic power have replaced 19th century fears about European countries. China has invested heavily in Latin America, including in Venezuela, as United States is.

[Jay Sexton]

No longer the sort of global hegemon that's able to preside over this global system. Spheres of influence are coming back. The Monroe Doctrine has a new place in American foreign policy and in American politics.

[Darian Woods]

In December, the White House published a document outlining its national security strategy. It talks about reasserting the Monroe Doctrine after what it calls years of neglect. And it describes some goals for the Western Hemisphere. One of them is discouraging mass migration. Another is going after narco terrorists and other criminal groups.

[Waylon Wong]

The strategy also talks about keeping critical supply chains in the hemisphere out of hostile foreign hands. And it's this last bit that Javier Blass believes drove the US to attack Venezuela. Javier is a columnist at Bloomberg who's covered the oil market for 30 years.

[Javier Blass]

The US is signaling everything under the Americas is safe because I'm going to be protecting and I'm willing to use also my military power to control if needed, or put under my umbrella of security those resources, if I believe that those resources are not safe, as that's the explanation that the White House is making with Venezuela.

[Waylon Wong]

And it's kind of like you're under our security umbrella whether you want to be or not.

[Javier Blass]

Oh, yes. This is not an optional security umbrella. As long as you are in the Americas, you are under it whether you like it or not.

[Darian Woods]

Right. Sounds a little bit like going door to door, offering protection for a bit of money.

[Waylon Wong]

Nice natural resources you got there.

[Darian Woods]

Javier says Trump has a long standing obsession with low oil prices. He describes the President's thinking like this. Trump wants low interest rates. If oil prices and gasoline prices are high, then inflation will go up and the Federal Reserve will hike rates. So to sum up, low oil prices means low inflation, which means low interest rates. Javier says this comes back to Trump's career in real estate, a business that typically benefits from low rates.

[Javier Blass]

Like really, that's what we bombed Caracas and captured Nicolas Maduro because on Trans Mine, the cost of a mortgage needs to be low because that's what he did as a business person. And then he associate low oil prices with low mortgages and then the means going into Venezuela. But I think that probably that's one of the things that he has in his mind.

[Waylon Wong]

We asked the White House about whether low oil and gas prices motivated the attack on Venezuela. Anna Kelly with the White House Press office responded in a statement that, quote, the President was clear in his motivation. The influx of drugs and criminals into our country was unacceptable.

[Darian Woods]

Trump's fixation on oil prices isn't new. What has changed, Javier says, is how openly the President is talking about wanting Venezuela's oil. Javier points out that when the US invaded a Iraq in 2003, the official rationale from the administration was that it was about weapons of mass destruction.

[Waylon Wong]

Under the Donro doctrine, there's no such pretext. And Javier calculates that Trump's security umbrella over the Americas now covers 40% of the world's oil production. He says the healthy supply of oil from the Americas isn't just keeping prices low, it's also insulating the US from geopolitical fallout in other parts of the world.

[Javier Blass]

Even when we see a lot of instability in producing areas, including the Middle east, prices remain relatively low. And all of that is allowing a more assertive foreign policy in America, because typically one of the main constraints of the Pentagon was what is the impact if we bomb, for example, Iran, is the oil price going to go to $100? Oil that has been in the minds of American military and diplomats for a very long time, probably since the 1970s.

[Darian Woods]

Venezuela may be the most prominent example of the Trump corollary or the Donro doctrine and practice. But historian Jay Sexton says you can point to other instances of the US Throwing its muscle around. The Trump administration has tried exerting influence over the Panama Canal. It's talked about making Canada into the 51st state.

[Waylon Wong]

The President has also renewed talk of taking over Greenland. He repeated this idea on Wednesday. This was just hours before a meeting at the White House with officials from Denmark and Greenland.

[Jay Sexton]

There clearly is a vision here about the United States assuming a more muscular, assertive, interventionist role in the region. But there's implications of that downstream. If you're going to depose and leaders of sovereign states, then the chaos that unfolds, you're going to have some responsibility for managing it. And I think that's where we're at right now in the current implementation of this new Donroe doctrine.

[Darian Woods]

There's actually another foreign policy term for what Jay is describing, and this one's a little less highfalutin. It's called the Pottery Barn Rule, and it's attributed to former Secretary of State Colin Powell. He said, if you break it, you own it. Right now, it's not clear whether Trump will follow this rule or come up with his own.

[Waylon Wong]

This episode was produced by Cooper Katz McKim, with engineering by Robert Rodriguez. It was fact checked by Vito Emanuel. Cake and Cannon is our show's editor, and the indicator is a production of NPR.