Many years ago, leaders met. 
Long ago, many leaders met in a city called Paris. 

In 1928, leaders met in Paris. They wanted to end war. They signed a deal called the Kellogg-Briand Pact. 

Some people thought the pact was not strong. It did not have a way to force countries to follow the rules. Because of this, it did not stop World War II. Some people even joked about it. 
But the pact did change the world in other ways. It helped create new laws. These laws said that starting a war is a crime. After World War II, leaders were tried for these crimes. The pact also helped lead to the United Nations. Today, wars between many countries are much rarer than before. The pact was a first step toward a more peaceful world.
The Kellogg-Briand Pact was a famous international agreement about peace. Its official name was the General Treaty for Renunciation of War as an Instrument of National Policy. The main goal was to stop countries from using war to settle their fights. Signatory states promised not to use war for disputes of any kind. This was a very big idea for the world at that time. It was meant to change how nations treated one another. 
Creating this pact was a many-step process. It began as a simple idea between two countries. American lawyers Salmon Levinson and James T. Shotwell helped plan it. Senator William E. Borah also promoted the idea. Originally, it was only meant to be a treaty between the United States and France. However, a diplomat named William Richards Castle Jr. worked to make it much larger. He wanted almost every nation in the world to join the agreement. 
The pact was officially signed in Paris on August 27, 1928. It was named after its main authors. These were Frank B. Kellogg from the United States and Aristide Briand from France. Many different nations signed it that day in the French Foreign Ministry. These included Australia, Canada, Germany, Japan, and the United Kingdom. By July 1929, many more countries had joined the group. A total of 57 state parties had joined by the end of 1929. 
Some people had many doubts about the pact. A common criticism was that it lacked a way to enforce the rules. There was no mechanism to make countries follow the treaty if they broke it. Because of this, the pact did not stop the Second World War. Some people even mocked the deal during the 1929 Paris Carnival. One person even called it a "worthless piece of paper." Historians have sometimes called the pact ineffective because it could not keep the peace. 
Even with those problems, the pact left a lasting legacy. It helped create the legal idea of a "crime against peace." This idea was used at the Nuremberg and Tokyo Tribunals after World War II. There, leaders were tried and executed for starting the war. The pact also helped shape the Charter of the United Nations. Since 1945, wars between established states have become much less common. It was an important early step toward a world governed by law. 
The Kellogg–Briand Pact was a major international agreement aimed at global peace. Its official title was the General Treaty for Renunciation of War as an Instrument of National Policy. The pact was a formal promise made by many nations to stop using war to settle disputes. These countries agreed not to use war to resolve conflicts of any kind or origin. This was a radical idea because it sought to remove war from national policy entirely. While it did not end all conflict, it changed how the world viewed the legality of war. 
The creation of the pact involved many specific people and legal steps. It began with a plan devised by American lawyers Salmon Levinson and James T. Shotwell. Senator William E. Borah also played a key role in promoting the idea. Originally, the agreement was intended to be a bilateral treaty between the United States and France. However, U.S. diplomat William Richards Castle Jr. worked to expand its scope. He successfully turned the narrow agreement into a multinational treaty for almost the entire world. 
The pact was officially signed on August 27, 1928, in Paris. It was named after its primary authors, Frank B. Kellogg and Aristide Briand. Kellogg was the U.S. Secretary of State, and Briand was the French foreign minister. On that day, representatives from many nations signed the document at the French Foreign Ministry. These included Australia, Belgium, Canada, Czechoslovakia, France, Germany, the United Kingdom, India, Italy, Japan, and the United States. By July 24, 1929, the pact officially took effect. 
Many nations joined the pact in the years following the initial signing. By the end of 1929, there were 57 state parties involved. This included countries like Mexico, Switzerland, and Greece. Between 1930 and 1934, six more nations joined, such as Brazil and Saudi Arabia. Even after World War II, new nations joined as borders changed. For example, the Czech Republic and Slovakia joined after Czechoslovakia dissolved in 1993. The pact remains in effect today, even though it was concluded outside the League of Nations.
Despite its high ideals, the pact faced heavy criticism for its practical limits. A major weakness was that it had no mechanism for enforcement. It did not include a way to compel countries to follow the rules. Some critics called it a "worthless piece of paper" or a "dead letter." The pact failed to prevent the Second World War or the rise of militarism. In fact, some nations began to wage wars without formal declarations to avoid the treaty. This happened during the Japanese invasion of Manchuria in 1931 and the Italian invasion of Abyssinia in 1935. 
However, the pact had a profound legal impact on international justice. It helped establish the legal concept of a "crime against peace." This concept was used during the Nuremberg and Tokyo Tribunals after World War II. Top leaders were tried and executed for the crime of starting aggressive wars. The pact helped erase the old legal distinction between a state of war and a state of peace. It also provided a foundation for the Charter of the United Nations. Today, the UN Charter prohibits the threat or use of force against other states. 
Looking at the long-term data, the pact's influence is visible in historical trends. Scholars note a massive shift in how often nations engage in military conquest. Between 1816 and 1928, there was an average of one military conquest every ten months. After 1945, this number dropped significantly to one conquest every four years. While civil wars continue, wars between established states have become much rarer. The pact helped move the world toward a system where international law regulates the use of force. It served as a vital early step in the history of multilateralism.
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