Operation El Dorado involved which two countries?

Operation El Dorado Canyon was a military operation conducted by the United States in April 1986, primarily targeting Libya. This operation was a response to acts of terrorism attributed to Libyan leader Muammar Gaddafi’s regime, including the bombing of a West Berlin discotheque that killed American servicemen.

The focus was specifically on the United States conducting airstrikes against various military targets in Libya. The collaboration and involvement of the U.S. in this context highlight the tensions between the United States and Libya during the 1980s, illustrating the geopolitical climate of that period. This operation is notable for its significance in the U.S. military's use of air power to deter state-sponsored terrorism, which is why the identification of the two countries involved in Operation El Dorado as the United States and Libya is accurate.

The other countries listed in the options did not partake in this specific operation, making them irrelevant in the context of Operation El Dorado Canyon. The details surrounding the decision to strike Libya and the broader implications of U.S.-Libya relations further contextualize the importance of the correct answer.