FDR's Good Neighbor policy reversed the interventionism that had grown from the Monroe Doctrine

The Roosevelt Corollary transformed the Monroe Doctrine from a defensive warning into a rationale for US military intervention

In 1904, President Theodore Roosevelt declared that the US had the right to exercise international police power in Latin America. Over the following two decades, the US intervened militarily in the region about a dozen times—often enough that Marines became known locally as "State Department troops."

The Monroe Doctrine was designed to keep Europe out of the Americas

First articulated in 1823 by President James Monroe, the doctrine declared the Western Hemisphere off limits to European colonization. It has since been invoked to justify US military interventions in Latin America, from Teddy Roosevelt's takeover of Venezuela to George H.W. Bush's arrest of Panama's leader Manuel Noriega.

The Monroe Doctrine helped lead to the American occupation of territory abroad

This podcast explores how the policy motivated a century of US military intervention throughout Latin America, the Caribbean, and the Pacific—covering the annexation of Hawaii, the Spanish-American War, and occupations of Cuba, Haiti, and Panama.

The Monroe Doctrine promoted 4 core principles

Monroe outlined four positions: the US would not interfere in European conflicts; it would not disturb existing European colonies in the Americas; the Western Hemisphere was closed to new colonization; and any European attempt to control an independent American republic would be regarded as a threat to US security.

James Monroe first outlined what became known as the 'Monroe Doctrine' during his 1823 Annual Message to Congress

President Monroe used his Annual Message to Congress to warn European powers against further colonization in the Western Hemisphere, asserting US opposition to foreign intervention and laying the foundation for a cornerstone of American foreign policy that remains to this day.

The US intervened in Latin America to block communist influence during the Cold War

Fearing Soviet expansion, the US intervened across Latin America by backing coups, funding right-wing regimes, and supporting anti-communist militias—most notably in Cuba, Chile, Nicaragua and Guatemala.

President Trump invoked the Monroe Doctrine in 2025, announcing a new 'Trump Corollary'

On Dec. 2, 2025, the 202nd anniversary of the doctrine, President Donald Trump issued a proclamation reaffirming US "dominance" in the Western Hemisphere. His administration's national security strategy officially codified the "Trump Corollary," stating that the US would prevent non-hemispheric powers from gaining strategic influence in the Americas.

A wave of Latin American independence movements most likely prompted the Monroe Doctrine

Between 1810 and 1822, many Latin American colonies separated from Spanish rule, 10 in the last two years. Concerns that Spain and its European allies might try to regain these republics were a main reason behind Monroe's declaration.

FDR greatly expanded the authority and size of the executive branch

FDR expanded presidential power through the New Deal, World War II leadership, and direct communication with the public. He redefined the executive branch as an active policymaking force and established expectations for strong, interventionist presidential leadership.

Hear the reasoning behind Trump's resurrection of the Monroe Doctrine in 2025.

The New Deal shifted economic and social authority to the federal government

Franklin D. Roosevelt's response to the Great Depression expanded federal power through economic regulation and social welfare programs, permanently reshaping federalism by shifting responsibility for financial security to Washington while leaving states to administer many of these programs.

Read an excerpt from the Monroe Doctrine, introduced in Monroe's 1823 address to Congress

On Dec. 2, 1823, President Monroe delivered his seventh annual message to Congress, now known as the State of the Union. One segment—warning European powers against interfering in the Western Hemisphere—became known as the Monroe Doctrine.

Franklin D. Roosevelt's 1941 speech framed World War II as a global fight for universal rights

Eleven months before the attack on Pearl Harbor, President Roosevelt outlined four fundamental freedoms that, in his words, people "everywhere in the world" ought to enjoy—speech, worship, freedom from want, and freedom from fear.

Learn about the history of the Monroe Doctrine

CBS Sunday Morning explores the origins of the Monroe Doctrine, tracing how a 19th-century warning against European intervention shaped US foreign policy and influenced America’s role in the Western Hemisphere for generations.

Before Pearl Harbor, the US was a nonbelligerent ally to the Allied powers

Between September 1940 and December 7, 1941, the United States remained officially neutral—yet President Roosevelt incrementally shifted policy from “cash‑and‑carry” to Lend‑Lease, funneling critical military aid to Britain and other allies without entering the war.

The intellectual architect of the Monroe Doctrine was Secretary of State John Quincy Adams, not Monroe

Adams, the main foreign relations authority in the Cabinet, shaped the key parts of the Monroe Doctrine speech. He advocated for a unilateral American declaration to warn European powers, rejecting a potential joint statement with Britain favored by some Cabinet members.

Roosevelt's 4 elections were driven by 2 major crises

Franklin D. Roosevelt won third and fourth terms in 1940 and 1944 as Americans emerged from the Great Depression and sought continuity during World War II. Voters prioritized stability, keeping Roosevelt in office until his death in 1945.

Franklin D. Roosevelt used radio to connect directly with Americans through his 'Fireside Chats'

Beginning in 1933, FDR harnessed the new medium of radio to explain policies and reassure the public during the Great Depression and World War II. His conversational fireside chats revolutionized presidential communication.

Roosevelt formally recognized the Soviet Union in 1933

In 1933, President Franklin D. Roosevelt formally recognized the Soviet Union—ending 16 years of nonrecognition and aiming to improve trade and stabilize relations amid growing global instability.

The Truman Doctrine marked the start of US containment strategy

Introduced in 1947, the Truman Doctrine pledged US support for nations resisting communism—starting with Greece and Turkey—and launched the containment policy that defined early Cold War strategy.

Foreign policy and war defined Madison's presidency

During James Madison's presidency, disputes with Britain and France over trade, maritime rights, and impressment dominated foreign policy, culminating in the War of 1812 and shaping how the United States engaged with major European powers.

The British Royal Navy—not the US military—enforced the Monroe Doctrine for most of the 19th century

In the early to mid-1800s, the US lacked the ships and military power to prevent European nations from colonizing the Americas. Britain enforced this to protect its commercial interests by keeping rival European powers out of Latin America.

Hear about why Europe obeyed the Monroe Doctrine, despite American military weakness

This podcast explores the European background of the Monroe Doctrine, highlighting France's efforts to install aristocratic Bourbon monarchs in the newly independent Latin American republics—and how US opposition, British threats, and Spanish resistance ultimately disrupted those plans.

European powers largely dismissed Monroe's declaration initially

The reaction in Europe ranged from quiet acceptance in Britain to outrage from Austria's Prince Metternich, who privately called it a "new act of revolt." At home, US newspapers reported a "warm and universal burst of applause," and Congress responded positively to the address.

After FDR was paralyzed by polio in 1921, Eleanor Roosevelt became active in politics and supported his political ambitions

FDR contracted polio at age 39 and permanently lost the use of his legs. Eleanor Roosevelt persuaded him to stay in politics, then took on the task of maintaining his public profile—attending events, building relationships, and serving as his "eyes, ears, and legs" across the country.

American presidents did not travel abroad until Teddy Roosevelt visited the Panama Canal in 1906.

The 22nd Amendment was a reaction to Roosevelt's four terms

After Franklin D. Roosevelt won four elections, Congress moved to prevent future presidents from holding power indefinitely. Ratified in 1951, the 22nd Amendment set a firm two-term limit as a safeguard against extended presidencies.

Hear Roosevelt's first 'Fireside Chat'

The president's casual radio addresses ditched the language of sloganeering and politiciking, intentionally framing the broadcasts as conversational explanations of current events and politics. The inaugural episode was broadcast in 1933, during the Great Depression, and outlined his plans to restore faith in the banking system.

FDR changed the date of Thanksgiving, then changed it back

In the waning years of the Great Depression, President Franklin Delano Roosevelt attempted to move Thanksgiving up by a week, giving merchants a longer holiday shopping season. After pushback from lawmakers, he reversed course in 1941, permanently fixing the date of Thanksgiving on the fourth Thursday of November.

Madison's presidency helped usher in the Era of Good Feelings

During the later years of James Madison's presidency, the collapse of the opposition Federalist Party after the War of 1812 reduced organized political division, contributing to a brief period of relative national unity known as the Era of Good Feelings.

FDR inspired Rockwell's 'Four Freedoms'

In his 1941 State of the Union speech, President Franklin Delano Roosevelt defined "Four Freedoms" that democratic societies provided: freedom of speech, freedom of worship, freedom from want, and freedom from fear. Rockwell conceived of a series of paintings based on those values, using his small-town examples of the principles in action. Below is "Freedom From Want."

Franklin D. Roosevelt was the only president to serve more than 2 terms

Franklin D. Roosevelt broke with precedent by winning four consecutive presidential elections. Serving from 1933 until his death in 1945, he remains the only US president to hold office for more than two terms.

President Harry Truman appointed Roosevelt as one of the first US delegates to the United Nations

After FDR's death in 1945, Roosevelt joined the delegation to the newly established United Nations. She was the only woman among the General Assembly delegates and was unanimously elected to chair the UN Commission on Human Rights.

Washington's Farewell Address warned that political factions and foreign entanglements were the greatest threats to the American republic.

Theodore Roosevelt is considered by many to be the "first modern president"

Roosevelt transformed the presidency by expanding executive power beyond conventional norms, arguing that the president could act in the national interest unless expressly forbidden to do so. His energetic leadership, media use, and policy activism expanded the office's role and prestige.

'Men and nature must work hand in hand. The throwing out of balance of the resources of nature throws out of balance also the lives of men.'

- President Franklin D. Roosevelt (1882–1945)

Franklin D. Roosevelt was the first president to use the term 'State of the Union'

In 1934, President Roosevelt became the first president to formally call the annual address the "State of the Union," replacing the older title "Annual Message to Congress" and using the language from the Constitution.

Franklin D. Roosevelt's 1937 court-packing plan sought to expand the Supreme Court—and failed

Frustrated by Supreme Court rulings against the New Deal, Franklin D. Roosevelt proposed expanding the court in 1937. The failed plan triggered fierce backlash and is regarded as the last serious presidential attempt to alter the court's size for ideological ends.

The Social Security System was created to protect Americans from economic disasters like the Great Depression

President Franklin Delano Roosevelt’s New Deal created new government agencies and programs in the wake of the Great Depression.

See a visual record of how Roosevelt helped build the United Nations

When President Truman appointed Eleanor Roosevelt to the first US delegation to the UN in 1946, her male colleagues assigned her to a minor committee, assuming she would play a minor role. In the end, she became one of the delegation's most effective negotiators—and chaired the drafting of the Universal Declaration of Human Rights.

Roosevelt chaired more than 3,000 hours of debate to produce the Universal Declaration of Human Rights

Roosevelt led the drafting committee for the Universal Declaration of Human Rights, guiding representatives from 18 nations through debate on conflicting ideas about rights, government, and citizenship. The General Assembly unanimously adopted the final document in December 1948.

The formation of the UN elevated the US on the world stage

This podcast episode of "To the Best of My Ability" from the National WWII Museum goes behind the scenes of the United Nations' founding from the American perspective. It explores how FDR's vision for global peace took shape, how Truman carried it forward, and how Eleanor Roosevelt helped define human rights—set against the backdrop of wartime diplomacy, Cold War tensions, and the San Francisco Conference, where the UN Charter was signed.

Teddy Roosevelt's intervention helped save football, which previously had been a brutally violent game.

The Social Security Act was formed to protect retired workers amid the Great Depression

President Franklin Delano Roosevelt’s New Deal created new government agencies and programs in the wake of the Great Depression, including the Social Security Act.

In the 1930s, Congress nearly passed a constitutional amendment requiring a national vote before declaring war

The Ludlow Amendment, proposed amid rising isolationism after World War I, would have required a national referendum before Congress could declare war, except in cases of direct attack. It was defeated 209 to 188 in 1938 after Roosevelt lobbied against it.

Some scholars consider the Bretton Woods system one of the best foreign policy decisions in US history

A survey of historians by the Council on Foreign Relations ranked the creation of the Bretton Woods system among the top 10 foreign policy decisions in US history, highlighting its role in establishing postwar stability, prosperity, and decades of economic growth.

How two US Presidents defined WWII and its aftermath

The National WWII Museum’s “To the Best of My Ability” podcast series delves into how Presidents Franklin D. Roosevelt and Harry S. Truman steered the US through World War Two.

Mexico admired Lincoln for opposing the war and supporting Mexican sovereignty

As a congressman, Abraham Lincoln condemned the Mexican-American War as unjust. Years later, as president, he backed Mexico’s fight against French occupation. His principled stance earned enduring respect and monuments across Mexico.

Theodore Roosevelt tried for a third presidential term in 1912

In 1912, after serving nearly two full terms—one elected, the other partial after stepping in as vice president—Theodore Roosevelt sought a third. He lost the Republican nomination to William Taft, then ran as a Progressive Party candidate but was ultimately defeated by Woodrow Wilson.

Roosevelt’s post-Pearl Harbor address became one of America’s most iconic speeches

Delivered to a joint session of Congress on Dec. 8, 1941, President Franklin D. Roosevelt declared Dec. 7 “a date which will live in infamy.” The speech, heard by tens of millions of Americans, helped consolidate national support for entering the war.