UNIFIED RULES FOR CLAN WARS

War (Competitive) is needed to prove the superiority of one clan over another.

There are clan rankings to resolve this issue; everything is clear there.

It might sound arrogant, but it should also have different conditions...
You can't just declare war like you declare a Competitive event...

And no one will declare war just like that (at least I hope not); there are Clan Wars for Competitive events. War is War.

But why war? Drako, why stir up war?

Well... let's just say that Drako isn't the one stirring it up; he's just showing those who will stir it up how to do it properly)).

What's the reason for war? Maybe I don't know enough about inter-clan life, but there haven't been any reasons for wars, such as insults, etc...

Yes... that means you don't know enough)). And even when it comes to insults, people here don't issue challenges; they just make comments and lower Battle Ratings)). The point is that people can't live peacefully, no matter what. Different people with different worldviews discuss their favorite game on the forum, so why not challenge the clan that has offended you?
An ideal society does not exist, and conflicts will always exist.

I'm for one option, and I hope it happens soon, because some people already want to declare war.

You talk about it as if it's nothing, just declaring war. But there will be consequences, and the magnitude of these consequences will depend on the nature of the clan you're going to declare war on. This isn't a Clan War, where you play peacefully and then go your separate ways...
(Sorry, but I might have too harsh a concept of war, but that's how it is.)