Watch the historic treaty signing that established NATO in 1949

How NATO responded to 9/11

The collective defense clause of the NATO constitution has only been invoked one time: after the 9/11 terrorist attacks against the United States. This video explores the immediate actions NATO took to respond to the attacks to support the United States. These firsthand clips from 2001 give a sense of the magnitude of the moment and the difficult decisions facing NATO leaders at the time.

NATO was formed in 1949 to deter Soviet expansion and integrate Europe

Europe was in shambles after World War II, which saw 36 million Europeans killed, and the Soviets were looking to increase their influence. Beyond deterring the Soviets, the alliance sought to restore Europe and prevent nationalist militarism akin to the German Nazis and Italian Fascists.

The United Nations was founded in San Francisco in 1945

The 1945 San Francisco Conference brought together delegates from 50 nations to draft the United Nations Charter, laying the foundation for the UN. This archival footage from the UN captures the event's atmosphere, showcasing firsthand reactions and the global hope for peace after World War II.

The 1941 Atlantic Charter was a World War II alliance and model for the UN

The Atlantic Charter was a pivotal 1941 agreement between Franklin D. Roosevelt and Winston Churchill, outlining shared goals for a post-World War II world rooted in freedom and self-determination. These ideals later inspired the founding principles of the United Nations.

Mapping NATO's 32 countries across North America and Europe

See an updated map with the option to learn more about each country's membership and role in the alliance. The map shows the borders of its member countries with extra filters capable of locating its many civilian structures, nonmember partners, positions of missile sites, and more.

Decisions at NATO are by consensus and must be unanimous

There are two strategic commands in NATO: one in Europe (Supreme Allied Headquarters Command Europe) and another in Norfolk, Virginia (Allied Command Transformation). The alliance is headed by both a military officer and a civilian leader.

Many years ago, the US dollar became the world's primary reserve currency

In 1944, 44 nations gathered in Bretton Woods, New Hampshire, to rebuild the global economy. The result? The US dollar became the world’s reserve currency, backed by gold.

D-Day, history's largest amphibious invasion, turned the war's tide

On D‑Day, over 156,000 American, British, and Canadian troops assaulted five heavily defended beaches along a 50‑mile stretch of northern France. Supported by nearly 3 million men, 1,200 warships, and 13,000 aircraft, the successful landings paved the way for the liberation of Western Europe and decisively shifted momentum against Nazi Germany.

Television transformed the State of the Union, beginning with Harry Truman

In 1947, President Truman delivered the first televised State of the Union address, marking the address's shift into the visual age and expanding the president's reach beyond radio to a national TV audience.

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.

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.

'Through this unique means, I convey to you and all mankind, America’s wish for peace on Earth and goodwill to men everywhere.'

- President Dwight Eisenhower (1890-1969) sending a message from space

Bill of Rights Day is commemorated annually in the United States on Dec. 15

The date marks the 1791 ratification of the first 10 amendments. President Franklin D. Roosevelt officially established Bill of Rights Day in 1941, on the document's 150th anniversary. Hear the speech he gave on that day.

The National Security Council advises the president on foreign policy and national defense

Created in 1947, the NSC coordinates military, diplomatic, and intelligence policy matters. Chaired by the president, it includes key Cabinet officials and senior advisers who shape American responses to global crises and security threats.

The treaty that ended the First World War laid the groundwork for the Second

On June 28, 1919, the Treaty of Versailles officially ended World War I by demanding severe reparations, territorial losses, military restrictions, and the infamous “war guilt clause” against Germany. However, its harsh terms fostered deep resentment, economic instability, and political turmoil—ultimately becoming a catalyst for World War II.

NASA was created by Congress in 1958

Created by Congress under the National Aeronautics and Space Act, NASA officially began in 1958, building on earlier aviation research and positioning the US to compete in the Space Race and lead global space exploration.

See the Declaration—known as the Matlack Declaration—displayed at the National Archives

The iconic handwritten Declaration displayed at the National Archives was penned by Thomas Matlack, the Continental Congress’s assistant secretary. He was chosen for his exceptional handwriting to prepare the formal copy signed by the delegates.

General Jennie Carignan was the first woman to lead a NATO mission

"NATO Through Time" is a podcast exploring NATO’s history and its impact on today’s world. This episode features General Jennie Carignan, Canada’s top military leader, as she shares insights from her NATO missions in Bosnia, Afghanistan, and Iraq.

Watch a clip from the 1980 NFL Draft, the first to be broadcast on ESPN

ESPN broadcast the 1980 NFL Draft from the New York Sheraton Hotel's grand ballroom. This decision transformed the Draft from a closed, industry-only event into the nationally televised spectacle it is today, drawing over 13 million viewers annually.

Watch 'The Atomic Café'—Cold War satire that exposed nuclear propaganda and proliferation risks

This 1982 collage-documentary uncovers a surreal Cold War era: US civil defense films downplayed nuclear horror, arguing the films fueled public complacency, while the arms race and civilian nuclear hype fueled global proliferation fears before NPT safeguards emerged.

Hear firsthand accounts from the 1963 March on Washington

This video features stories from people who attended the 1963 March on Washington—the largest demonstration in US history at the time—capturing what it felt like to witness a pivotal moment in the Civil Rights movement as it unfolded.

Explore an interactive timeline of the most important moments in the WEF’s history

This interactive traces the World Economic Forum’s evolution from a small European meeting in the 1970s into a global power hub, highlighting pivotal moments in Davos, landmark speeches, and turning points that have shaped its outsized influence on world affairs.

A small mistake in a press conference triggered the fall of the Berlin Wall

This video explains how a confused East German spokesman—misreading new travel rules at an otherwise routine 1989 press conference—accidentally announced immediate border openings, prompting crowds to surge to the Berlin Wall and igniting Germany’s rapid reunification.

See a collection of LIFE's most iconic photos in history

Famous images, like a sailor kissing a nurse in Times Square to celebrate the end of World War II, are each shared with context in this article. See some of history's most famous moments from a unique point of view, including photos of Marilyn Monroe, the Beatles, and Muhammad Ali.

Meet the 56 signers of the Declaration of Independence—most of whom didn't put pen to paper until August 2, 1776—and see their original signatures.

See the White House bowling alley in use

First installed in 1947 for President Harry Truman, the White House bowling alley was later moved to the basement of the Executive Office Building. President Nixon, an avid bowler, added a new one-lane alley beneath the White House in 1973.

See the most iconic photos from four decades of LIFE magazine

The US Constitution is widely regarded as the longest-standing written national constitution still in force—see how it has influenced rights worldwide.

The idea for the Federal Reserve was conceived in secret in 1910—with bankers donning duck hunt gear for disguise while traveling to a remote country club on Georgia's Jekyll Island

The US first hosted the World Cup in 1994, a tournament that lives in soccer infamy for its poor planning and the murder of Colombian player Andres Escobar, who'd accidentally scored on his own net.

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

In 1945, Surrealist artist Salvador Dalí and legendary animator Walt Disney began collaborating on a short film that was not completed until 2003, years after both men had died.

A 2019 Facebook event called on attendees to "Storm Area 51, They Can't Stop All of Us," resulting in countless memes, the creation of a music festival, and eventually the arrests of those who did try to approach the area.

Watch a 1934 short film starring jazz legend Cab Calloway, a major figure in the Harlem Renaissance's music scene

In 1984, Operation Smash Hit intentionally crashed a 239-ton train into a nuclear waste canister at 100 miles per hour to prove the canister's safety, which remained completely intact and lost just 0.29 of its 100 pounds of pressure.

View the ten deadliest tornadoes in US history.

Watch contemporary footage covering the US-backed Shah of Iran fleeing the country in the face of the 1979 Iranian Revolution

Before humans, the Soviet Union and the United States sent animals—including apes, dogs, and cats—to space during the Space Race.

Sunflowers have long been a symbol of nuclear disarmament because they can extract large amounts of radioactive cesium from soil.

In 2025, four executives from large tech companies were given positions in the US Army Reserves—including Palantir Chief Technology Officer Shyam Sankar, which reinforced Palantir's ties with the US military and its role as a leading defense partner.

American dance legend Martha Graham, sometimes called 'the Picasso of dance,' refused to perform at the 1936 Olympics in Berlin and conceived the piece 'Chronicle' in response to the experience.

The story of Dollree Mapp, whose legal challenge over her 1957 conviction for possessing "obscene material" led to a major strengthening of the Fourth Amendment

Legendary architect Frank Lloyd Wright designed the SC Johnson headquarters in Wisconsin, aiming to make a cathedral-like workplace

According to the physics of black holes, our 4D reality may be a hologram—a projection of information coded on a 2D surface on the edge of the universe.

'Shogun,' a 1980s TV series, helped popularize sushi in the US by stimulating an American interest in Japanese culture.

In 2026, Finland was named the world's happiest country for the ninth consecutive year based on its wealth, social safety network, and high life expectancy, among other factors.

'Grand Canyon of the Yellowstone,' a work by American painter Thomas Moran, inspired Congress to establish Yellowstone National Park.

The Russia-Ukraine conflict is the largest ground war in Europe since World War II in terms of casualties, forces mobilized, and displacement of civilians.

Comedy legend Catherine O'Hara, star of 'Schitt's Creek' and 'Home Alone,' quit 'Saturday Night Live' after just one week to return to her old job.