I don't know why anyone would deal with Iraq in this manner. The status of forces agreement signed between the U.S. and Iraq in 2008 wasn't a "diplomatic agreement" at all ... it was a formal agreement to lay out the terms under which the U.S. military would operate in Iraq, and then leave Iraq. The whole purpose of signing the agreement was to establish the legitimacy of the Iraqi government. If the U.S. intended to break the agreement for any reason, then we would have been in the position of overthrowing the elected government we had established after the Ba'athist government of Saddam Hussein had been toppled.
The U.S. never would have done this, for two reasons:
1. It would have destroyed our credibility all over the world.
2. It would have been a disaster politically here in the U.S. How do you p!ss away thousands of American lives and hundreds of billions of dollars for a military campaign to "promote freedom and democracy" in Iraq, only to turn around less than a decade later and decide that you didn't like the results of that "freedom and democracy?"
The examples you give of Korea and Germany are old, tired, and irrelevant. Korea and Germany were modern states before the U.S. ever got involved with them, and our presence in those countries doesn't even meet the basic definition of a military occupation. Iraq was never a viable modern state. It was cobbled together from the remnants of the British empire, and the U.S. was delusional if we really thought we could depose Saddam Hussein, paint a bunch of purple fingers over there, and call it a modern democracy.
History will remember George W. Bush and Lyndon Johnson as the two @ssholes from Texas who were responsible for disastrous military calamities in Third World dumps.
North Korea doesn't seem so old news right now, with their nuclear testing. We are still supporting the DMZ 60 years later.
-PJ
Not only those 2 invaded countries we had no real reason to invade, but even bigger folly was to fight in Vietnam with both hands tied behind back, and attempt nation building in Iraq with borrowed money from China!