"and will these American invasion wars to Iraq and Agfhanistan eventually lead to a big world war?"
No...we have seen repeatedly over the last century, except for a single instance of good planning in 1973, Arab armies are for the most part only good at keeping the unemployment rate of young men down in their respective countries. With declining revenues and social structures I can't see how they will be able to keep up with nations (other than those in sub-Saharan Africa).
"And do you guys think Germany will one day (soon within 20 to 30 years) rise to a super military power and take the leadership over Europe again and make some big change on the stance of W.Europe over the world affairs?"
No, as virtually any possible opponent would be nuclear armed by that time. Germany already displays considerable leadership when it comes to policy inside the EU.
"Another question is actually do you guys have faith in your government? Or it does not bother with you at all?"
I have faith that every 4 or so years I can replace one group of inept and visionless criminals with another. Until good and sincere people start running for government to make Canada (in my case) a better place, as opposed to the current petty quest for power by retreads and 2nd stringers, I have no other option...so why let it bother me.

"Patriotism is your conviction that this country is superior to all other countries because you were born in it."
George Bernard Shaw