United States invasion of Panama

The United States invasion of Panama began 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. He 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 from 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.

On December 20, the U.S. invasion of Panama began. Panamanian forces were rapidly overwhelmed, although operations continued for several weeks. Endara was sworn in as president shortly after the start of the invasion. Noriega eluded capture for several days before seeking refuge in the Holy See diplomatic mission in Panama City. He surrendered on January 3, 1990, and was then flown to the U.S., where he was tried, convicted and sentenced to 40 years in prison.

The Pentagon estimated that 516 Panamanians were killed during the invasion, including 314 soldiers and 202 civilians. A total of 23 U.S. soldiers and 3 U.S. civilians were killed. The United Nations General Assembly, the Organization of American States and the European Parliament condemned the invasion as a violation of international law. Meanwhile, the United States government cited a responsibility to protect American citizens residing in Panama, along with a need to enforce democracy and human rights, as rationale for the invasion.

Some researchers have argued that it was the first major U.S. military action since 1945 not related to the Cold War, framing it as an early precursor to unilateral interventions in an emerging world order with an emphasis on public opinion, international legitimacy, operational execution, and regime change.