Hussein wasn't installed by the US. Neither was the Ayatollah. Neither was Bin Laden.
the last thing the US wanted was a radical islamic leader in Iran. In fact, they were supporting the Shah against Mohammad Musaddiq, a more populist leader. Unbeknownst to much of the US state department, the Shah was busy killing religious leaders. The US thought he really had high approval ratings, etc.
So anyway, repressing religion isn't the best idea and it failed miserably; the Ayatollah rebelled. So the irony is that, in fighting a potentially communist Iran, the US created a worse enemy in a fundamentalist Iran. It really, really didn't want to do this.
Hussein wasn't installed by the US either. Our author is confusing "installed by" with "supported by." During the Iran-Iraq war of the eighties, the US was, at various times, supporting both sides of the war to keep the oil flowing.
Bin Laden benefited from US help in fighting against Russia. Neither the Taliban nor Bin Laden were installed by the US either.
I think our author might also be confusing "Saddam" with "North Korea" and "the US" with "Russia" and "the Gulf War" with "the Korean War" because Mao and friends (korean guy's name escapes me) were all taking their orders from Stalin in that war. The US hardly gave the okay to anything Iraq did leading up to the gulf war.
It was, however, in the opinion of almost every political scientist, about oil.