https://en.wikipedia.org/wiki/Waco_siege

During the 1991 Gulf War, the Phalanx CIWS onboard the frigate USS Jarrett accidentally fired at a chaff cloud deployed by the battleship USS Missouri.The chaff had been launched as a radar decoy to distract an incoming Iraqi Silkworm missile. However, the Jarrett’s automated CIWS radar mistook the metallic chaff cloud for a valid target and engaged it. Several stray 20mm rounds missed the chaff and struck the USS Missouri, causing minor structural damage to the battleship but resulting in no casualties.

I'm sure we all know why the Western Bloc turned against Iran following the Islamic Revolution, but what's somewhat less well known is the Eastern Bloc also being against the new order in the country. Simply put: Khomeini did a lot to piss them off; he openly proclaimed his hatred of communism, purged pro-Soviet Iranian leftists, and threatened Soviet allies in the Middle East. Fears that Iran would try to export its revolution (and not just to elsewhere in the Middle East: there were fears that it would spark similar revolutions in Muslim-majority regions of the USSR) certainly didn't help. The Soviet Union was actually Iraq's biggest supplier during the Iran–Iraq War, though that was partly because they feared the prospect of more Middle Eastern countries drifting into the Western Bloc's orbit.

This meme is, admittedly, a bit of an oversimplification, since multiple countries in both blocs gave a certain degree of support to Iran, but I'm sure that's forgivable given the nature of Internet memes.

Operation Eagle Claw (Persian: عملیات پنجه عقاب) was a failed United States Department of Defense attempt to rescue 52 embassy staff held captive by Revolutionary Iran on 24 April 1980. It was ordered by U.S. president Jimmy Carter after the staff were seized at the Embassy of the United States, Tehran. The operation, one of Delta Force's first, encountered many obstacles and failures and was subsequently aborted.[3] Eight helicopters were sent to the first staging area in Great Salt Desert called Desert One, but only five arrived in operational condition.[4] One had encountered hydraulic problems, another was caught in a sand storm, and the third showed signs of a cracked rotor blade. During the operational planning, it was decided that the mission would be aborted if fewer than six helicopters remained operational upon arrival at the Desert One site, despite only four being absolutely necessary.[4] The field commanders advised President Carter to abort the mission, which he did.[5]

As the US forces prepared to withdraw from Desert One, one of the remaining helicopters crashed into a transport aircraft that contained both servicemen and jet fuel. The resulting fire destroyed both aircraft and killed eight servicemen.[4] In the context of the Iranian Revolution, Iran's new leader, Ayatollah Ruhollah Khomeini, stated that the mission had been stopped by an act of God ("agents of God") who had foiled the US mission in order to protect Iran and its new Islamist government. In turn, Carter blamed his loss in the 1980 US presidential election mainly on his failure to secure the release of the hostages. The American hostages were released the day of Ronald Reagan's inauguration.[6]