The reason behind the fact that there is no "unifying level of trust" may be found in the fact that countries hide so much from eachother. They don't tell the whole story. Seriously, these 'high placed officials' are all adults right ? If that is the case they might actually be intellectually capable enough to discuss with eachother about these "value systems".
I agree with you on idealistic terms. But I cannot escape the nature of the world and humans and thus I err on the side of pragmatics. What I mean is that since religion and racial hatred make up a huge part of the foreign policy of many countries, not to mention the "me me me" nature of humans when it comes to economics, one cannot assume that everyone can ever truly be "adult" about the whole thing. Is it possible to have an adult conversation with a country that has said it wants to blow another race of people, or religion, off the face of the earth? That's what I mean by different value systems. When one side cares more about a racial / holy war than peace, I think it is impossible to have a rational conversation.
As far as economics, I am a dyed-in-the-wool leftist. I believe that I should be taxed so that the rest of my society can be more equal on a social economic level. But one only needs to look at negotiations between unions and employers to see that since humans look to maximize themselves at all costs, it is very difficult for both sides to achieve something that is good for both sides, and the prosperity of the company long term. Each side, so paranoid of the other and so resigned to maximizing themselves, pursues their own good at the cost of the other side. General Motors is a good example. I personally belong to a union and work for an employer that seem to behave like children every four years (collective agreement renewal). I don't like it, but this is the way of the world. I don't know too much about Europe, but it seem like the European Union seems to be a step in the right direction - doing what is good for everyone. The rest of the world behaves like adversaries, and in many cases rightfully so because they HATE the other side!
What you're stating here is truely outrageous. You are comparing the parent-kid relationship with government-citizen relationship. What you're saying is that citizens are ought to vote for politicians, but in fact they are not qualified to understand the world of politics and thus politicians keep certain things secret and lie to the people. Why is this ? Because they do not do as they say. During election campaigns they have an amazing story etc, but once they got their job, they forget what they said and will do stuff that contradicts to their campaign speeches. What the worst thing is, they try to keep it secret. Also I don't know the age of your son, but if he's any older that 15, I don't see a reason why he cannot hear about finances and retirement plannings.
The reason politicians cannot always do what they say is because the average person is not privy to all the things that go on behind the scenes. As far as domestic policy, yes, things should be transparent, but I disagree regarding foreign policy. There is too much going on for the average person to make an informed decision. I do not want the average person, and the "groupthink" that occurs when masses are together, to lead my army! It is weird for me to say this, because I am a leftist, but I think you need to leave the jobs that require skill to those that have those skills, not to the average person and the masses. Oh, and my son is a baby!

You're not really giving decent arguments for this. You seem to play the "national security" card. But what if as I said, these "top level negotiators" just discuss their problems in an open, adult and intellectual way, wouldn't this be much better than keeping secrets and hiding things for other governments ?
This is the thing. an "open, adult and intellectual" way of speaking presupposses a value system that is not universal. Actually, it is also quite a western value system. I assume you mean that "rationality" and "the common good" should preside as the foundation of talks? Again, this is a very western assumption. Many people would not dream of discussing their national issues without first asserting religion, and all that stems from that, as the basis of their policies. That, coupled with the "me me me" human nature mixed with racial haterd, makes the foundation of "adult and intellectual" truly impossible.
I have really enjoyed the conversation.