As far as Iraq, Rumsfeld is especially to blame -- with his strategy of "use just enough force to lose the peace" ... Instead of the Powell "overwhelming force" doctrine.
Of course, tactics would only be a central issue if the Iraq was was even necessary (or wise) in the first place.
Here's what the people on the ground are saying:
Yet the reasoned heads that are calling for a redeployment of our forces are the "cowards" ...
One Army officer summarized it [the report] as arguing that in Anbar province, "We haven't been defeated militarily but we have been defeated politically – and that's where wars are won and lost." The "very pessimistic" statement, as one Marine officer called it, was dated Aug. 16 and sent to Washington shortly after that, and has been discussed across the Pentagon and elsewhere in national security circles. "I don't know if it is a shock wave, but it's made people uncomfortable," said a Defense Department official who has read the report. ...
Devlin reports that there are no functioning Iraqi government institutions in Anbar, leaving a vacuum that has been filled by the insurgent group Al Qaeda in Iraq, which has become the province's most significant political force, said the Army officer, who has read the report. Another person familiar with the report said it describes Anbar as beyond repair; a third said it concludes that the United States has lost in Anbar.
No Mr. President: your policies are intellectually and pragmatically bankrupt. The only logical course is to stop sacrificing American lives in an attempt to appear tough. The conflict is only serving as a training ground for Al Qaeda and a rallying cry for radical Islam: in short, the entire effort is a boon too UBL.
And while it may have have been a boon to your political career -- that too is quickly coming to a close.