A. The non-existent threat I was referring to was Russia, TYVM. Cold War, here.
B. Your history lesson of the day:
We'll start with JFK. JFK was obsessed with the third world. Lenin writes: "Imperialism: The Highest Stage of Capitalism" which states that the communist revolution will start in the third world and that communism wil liberate colonized third world countries. Thus, the Peace Corps was designed in order to win over the support of thrid world countries by providing aid. In 1959 in Cuba, we see Castro launch his revolution against the American puppet dictator Batista (we have had several puppet dictators in the course of our history). Thus, JFK begins to plot Castro's assasination. Through this we see the Bay of Pigs invasion and the Cuban Missile Crisis. This is paranoia. Cuba (nor Russia) never made a move against us directly.
After this, JFK subtly starts to try and control Vietnam (and this is where we can really start drawing similarities between then and now). When Ho Chi Minh was originally fighting the French occupation, he said he would fight off the Japanese (WWII) after France fell (which it did) and this made him our ally. We began arming Vietnamese troops so they could fight Japan for us. This is where they got many of the weapons they used in the Vietnam war. Later, after France tries to take over Vietnam again, we enter the Geneva Accords. In which we (being everybody but Vietnam) agree to split the country along the 17th parallel. Ho Chi Minh would take control of the North while Diem (another puppet dictator) would take control of the south under the promise that in 1956 free elections would be held to choose who the people wanted to run a united country. When it becomes clear that Ho Chi Minh (a communist) would win, JFK sends in the OSS to try and turn the north against Ho Chi Minh. When that fails, the elections are cancelled completely. So, Ho Chi Minh launches a war to unite the country. Eventually this all leads to a misunderstanding at the Gulf of Tonkin that lights the way for the Vietnam War.
At the end of the war (thanks to Nixon) when Reagan comes to power, he says that it isn't enough to simply contain the communists, we must destroy them completely through force. Of course, we can't do anything directly because attacking Russia would have sparked off WWIII and thus a nuclear winter. So, we find the Somoza Family in Nucaragua. They were a vicious crime family, but they were anti-communist. When teh Sandinistas overthrew the Somoza Family in the 1980s, Reagan wanted to arm the Contras (the Somozas who survived). Unfortunately, only congress can raise funds for war and this idea is shot down. So, Reagan comes up with the idea of selling weapons abroad. We sell arms to Iran and Iraq (and this is where Saddam comes into power- he'd been on the CIA's payroll since 1959, though. He was our ally- it was all a plot to get rid of the Communists in Iraq and Iran) thus, we have sold them the weapons they're using to fight us now. In Afghanistan at the same time, the Russians invade. We can't do anything to stop them because it would start WWIII (but really, we have no reason to stop them- we have no interests in Afghanistan). We arm the Muhajadeen ("the holy warriors") who beat the Soviets badly. Through this, Osama Bin Laden comes to power and forms Al-Queda ("the connection") by contacting all the surviving members of the Muhajadeen.
Now, in regards to the First Gulf War (when Iraq invaded Kuwait), I'm going to quote an article I've read:
There you have it. All the reasons (ok, I'm probably missing a couple) that it's our fault. We're an overly paranoid society. We need to get over that. Because from this, if you replace "communism" with "radical muslim terrorists" and "JFK and Reagan" with "George Bush" and "Vietnam" with "Iraq", it's pretty much the same situation.
Oh, and as for why we invaded Iraq: we "thought" there were WMDs. Look
here for proof we knew there weren't any in 2005. And look
here to see that we invaded in 2003, but UN and International Atomic Energy Agency (IAEA) inspectors had found no WMDs of any sort before we invaded. And we found none afterward.