Manuel Noriega in the context of Chorrillos Military School

The United States invaded Panama in mid-December 1989 during the presidency of George H. W. Bush. The purpose of the invasion was to depose the de facto ruler of Panama, General Manuel Noriega, who was wanted by U.S. authorities for racketeering and drug trafficking. The operation, codenamed Operation Just Cause, concluded in late January 1990 with the surrender of Noriega. The Panama Defense Forces (PDF) were dissolved, and President-elect Guillermo Endara was sworn into office.

Noriega, who had longstanding ties to United States intelligence agencies, consolidated power to become Panama's de facto dictator in the early 1980s. In the mid-1980s, relations between Noriega and the U.S. began to deteriorate due to fallout of the murder of Hugo Spadafora and the removal from office of President Nicolas Ardito Barletta. His criminal activities and association with other spy agencies came to light, and in 1988 he was indicted by federal grand juries on several drug-related charges. Negotiations seeking his resignation, which began under the presidency of Ronald Reagan, were ultimately unsuccessful. In 1989, Noriega annulled the results of the Panamanian general elections, which appeared to have been won by opposition candidate Guillermo Endara; President Bush responded by reinforcing the U.S. garrison in the Canal Zone. Following the declaration of a state of war between Panama and the United States passed by the Panamanian general assembly, as well as the lethal shooting of a U.S. Marine officer at a PDF roadblock, Bush authorized the execution of the Panama invasion plan.

The Panama Defense Forces (Spanish: Fuerzas de Defensa de Panamá; FFDD), formerly the National Guard (of Panama) (Spanish: Guardia Nacional), were the armed forces of the Republic of Panama.

It was created in 1983, led by Panama's dictator General Manuel Noriega and his general staff. It was dismantled by the United States Armed Forces after the United States invasion of Panama in 1989.

Hugo Spadafora Franco (September 6, 1940 – September 13, 1985) was a Panamanian physician and guerrilla fighter in Guinea-Bissau and Nicaragua. He criticized the military in Panama, which led to his murder by the government of Manuel Noriega in 1985.

General elections were held in Panama on 7 May 1989, with the goal of electing both a new President of the Republic and a new Legislative Assembly. The two primary candidates in the presidential race were Guillermo Endara, who headed Democratic Alliance of Civic Opposition (ADOC), a coalition opposed to military ruler Manuel Noriega, and Carlos Duque, who headed the pro-Noriega Democratic Revolutionary Party (PRD).

However, the election was annulled before voting was completed by Noriega's government, and Endara and his running mate Guillermo Ford were attacked in front of foreign media by Noriega supporters, events that contributed to the US invasion of Panama in December of that year. During the invasion, Endara was declared the election's winner and sworn in as the new president of Panama.

The United States invaded Panama in mid-December 1989 during the presidency of George H. W. Bush. The purpose of the invasion was to depose the de facto ruler of Panama, General Manuel Noriega, who was wanted by U.S. authorities for racketeering and drug trafficking. The operation, codenamed Operation Just Cause, concluded in late January 1990 with the surrender of Noriega. The Panama Defense Forces (PDF) were dissolved, and President-elect Guillermo Endara was sworn into office.

Noriega, who had longstanding ties to United States intelligence agencies, consolidated power to become Panama's de facto dictator in the early 1980s. In the mid-1980s, relations between Noriega and the U.S. began to deteriorate due to fallout of the murder of Hugo Spadafora and the removal from office of President Nicolas Ardito Barletta. His criminal activities and association with other spy agencies came to light, and in 1988 he was indicted by federal grand juries on several drug-related charges. Negotiations seeking his resignation, which began under the presidency of Ronald Reagan, were ultimately unsuccessful. In 1989, Noriega annulled the results of the Panamanian general elections, which appeared to have been won by opposition candidate Guillermo Endara; President Bush responded by reinforcing the U.S. garrison in the Canal Zone. Following the declaration of a state of war between Panama and the United States passed by the Panamanian general assembly, as well as the lethal shooting of a Colombia-born U.S. Marine officer Lt. Robert Paz at a PDF roadblock, Bush authorized the execution of the Panama invasion plan.