Why did the United States invade Panama to capture a former CIA informant?

History · Published 30 September 2026 Swipe more like this →

In short: In late 1989, the United States launched Operation Just Cause, a military intervention aimed at removing Panamanian dictator Manuel Noriega. Once a paid CIA informant, the strongman had become a liability, accused of drug trafficking, money laundering, and brutalizing political opponents, ultimately forcing a confrontation over the Panama Canal.

The relationship between Washington and Manuel Noriega soured throughout the 1980s. Initially, Noriega was a key asset who supported the contras in Nicaragua and provided intelligence to the CIA. However, evidence emerged that he was also smuggling drugs into the United States and selling restricted American technology. Tensions peaked as the 1977 Panama Canal Treaty approached its deadline for transferring control of the canal, a vital strategic asset for U.S. military and economic interests.

The situation reached a breaking point in 1989. After Noriega annulled a presidential election won by opposition candidate Guillermo Endara and declared a state of war against the United States, President George Bush mobilized. On December 20, 1989, 24,000 U.S. troops invaded Panama. The operation aimed to capture Noriega, protect American lives, and restore democratic order. While organized resistance fell quickly, the conflict resulted in the deaths of 23 U.S. soldiers and hundreds of Panamanian civilians and combatants.

Noriega evaded capture for four days before seeking refuge in the papal nunciature. U.S. forces eventually forced his surrender on January 3, 1990, by subjecting the embassy to a relentless sonic assault of rock music. Transported to Miami, Noriega was tried and convicted on drug charges. The intervention drew significant international criticism, with the Organization of American States condemning the action 20 to 1 as an unwarranted intervention, highlighting the complicated legacy of American influence in Latin America.

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