If you have any knowledge at all from the countries in question or the world in general, you would've understood the sarcasm. Now you just prove you have no idea what you are talking about.
Finland has a massive army and Sweden is renowned for its air power. These are not secrets, but well-known facts that even slightly educational people know. Unlike you.
Dude it's an alliance of western powers. No matter how proud the Nords are of their armies, they are ultimately dependent on the military and financial domination of the US.
Look it's hard to put a definite date on it, because capitalism didn't just happen in one day. It happened over centuries. The european alliance had its roots in the colonial rush for the New World, and later Africa. After squabbling over territories, they learned they could make more money by cooperating and exploiting the poor countries together. And it's been like that ever since about 1900.
Deterrents are not absolute. Also, I don't know how you're not aware of this, but it was Ukraine's announcement they'd be joining NATO that provoked Russia. That doesn't sound like an alliance preventing war, does it... As I said - deterrents are not absolute. They never are. Police and prison (allegedly) deter crime, for instance.