camberiu,
I don't know if "most Americans" are different than "most Brasilians" or "most Russians" when it comes to having a handle on geo-political events. I think the Average Joe, Juanita, or Sergei are pretty much concerned with what happens as it affects them personally.
Colonel Bacevich made a case that the average American has developed over the past decades, an "imperial" mindset. Brazilians and most other nationalities lack that mindset. I am not saying that we are better than Americans (that would be silly), but we have a much much lower tolerance for foreign adventures, military occupations overseas than the typical American. For example, the US today represents about 20% of the world's GDP. Yet, it spends more in military and defense than all other countries on Earth COMBINED. Where else would this be politically possible? In arrived in the US in 1990. The US has been into war ever since. That is over 20 years of continuous conflict. I arrived in the US, I lived there, I left for Argentina, and the war is still going on. The US has a generation of 20 somethings that have known no other reality but war. All of them of choice and overseas.
And we are now talking about attacking Syria. Don't you find that different and usual when compared with most other countries?
There is a strong anti-war movement in the US. Many of us think that we use the military as a quick answer to problems. Many of us are very conflicted about the use of drones. They are extremely effective but at a very high public opinion price.
There WAS a strong anti-war movement in the US, until Obama got elected. Then it mostly vanished into the thin air. Remember Cindy Sheehan, the mother of the GI killed in Iraq that used to camp on Bush's ranch as a protest against the war? Where is she? Where did she go? I have not heard of her since Obama started his first term in office. What happened to movie director Michael Moore? Why there is no documentary of his about drone strikes and torture happening under the Obama administration?
The Trayvon case was important because it touched and affected all of us.
More important than the indiscriminate killing of civilians? OK.
How about the Jerry Sandusky case? was that more important too?
How about the Kate Middleton story? Did that touch us all too?
How about Rihanna and Aston Kutcher Hooking Up?
How about the launch of the Ipad Mini?
All those things were much bigger news than ANYTHING leaked by Manning.