I don't see debating as mediating, or having much to do with the duties required of an ambassador or a diplomat.
So what you are basically saying is that objectivity, persuasion, finding common ground with others is not your intention. You are just here to spout your opinion. That is the opposite of open-mindedness.
I view debating as a process of analyzing, seeking to understand, attempting to persuade others or come to possible means of resolving conflicts. In other words, to me debate is an equal mix of learning andf teaching.
Since you will not "lie" and like to call it as you see it,. I will follow that course.
You are a fierce debater (by your implied definition) until you are faced with something that logically challenges you. At that point you fall back on "I stand by what I said" because you have nothing more substantial than your own ego to support it. By this I do not mean that you are unintelligent - far from it. You may be intellectually lazy. It's hard to come up with good arguments with some of the excellent debaters here and elsewhere. That is unfortunate, but excusable - since the world does not revolve around our opinions and we all have real life responsibilities to attend to. OTOH you may be an intellectual coward. You are so wrapped up in your own self-image as a liberal (or whatever image you have of yourself) that to admit you (and/or the many liberal sources you cite) are wrong would be intellectually traumatic. If that is the case, I urge you to try accepting that the core values you completely believe in may be wrong. It is liberating - and you do not necessarily have to conclude that they ARE wrong. Just accepting the possibility opens the mind and enables the learning process.
The Bush administration is not evil. It may be confused about moral priorities. It may be diplomatically inept (and I am among the many who believe that to be the case). But it is not evil. Saddam Hussein and Osama bin Laden are evil. Hitler was evil. Bush is, at worst, a bad President (and I do NOT believe that to be the case).
You are correct to say that you are not here to be a diplomat. That is, however, a very good way to approach debate. At the very least, BT is correct in pointing out that encouraging such qualities in others while seeing no need of them in your own debate is at best hypocritical and at worst arrogant.