LEM I agree that the Iraq and Afghanistan invasions were a mistake.
Afghanistan was a country decimated by 10 years of the Soviets throwing everything but the kitchen sink at them, followed by another decade of instability. So a society wracked by 20 years of conflict. The last thing they needed was more conflict
Iraq - At the time Saddam was contained, there was not internal opposition movement and the majority of Iraqis did not want an invasion. The country was generally peaceful in 2003.
Syria is obviously different and again, I must stress a boots on the ground invasion is not being considered.
There also seems to be some very peculiar ideas on here on what a country should be like post dictatorship. Decades of poor governance, corruption and various internal resentments cannot be fixed overnight.
It is far, far too early to pass judgement on Libya on Egypt - both are hugely different countries and societies BTW, do not be fooled by them both being Arab Muslim countries, what happening in Egypt in particular is related to societal histories and attitudes which are very particular to Egypt.
To givetwo two different examples, both South Africa and Romania have removed repressive regimes (albeit via peaceful means) and both societies, while greatly improved, still have significant problems.