Let's try to put a finer point on this:
wolram said:
I was wondering how much it would take to bring about world peace and started to look up some facts, to me it seems impossible with all these countries in conflict.
https://en.wikipedia.org/wiki/List_of_ongoing_armed_conflicts
What exactly would satisfy you? Do you literally mean precisely zero war? Personally, I don't think that's realistically achievable nor particularly meaningful.
How about this: for all of recorded history, global war deaths ran from as little as about 1 per 100,000 population per year during "peacetime" (average of about 2) to 100 per 100,000 per year during "war" (average of about 50). Then starting in the 1990s, the peacetime war deaths rate dropped as low as 0.2 and the "wartime" death rate dropped to about 0.5. In other words, at the height of the worst wars of the past 20 years, the world was
four times safer than during any sustained
peacetime in previous human history - and compared to other "wartimes", about a hundred times safer.
The drop at the end of the cold war (really, it started after WWII, then plateaued for a bit) is so stark that in order to avoid having to say we're a rounding error away from complete world peace, the graphs have to be logarithmic:
http://ourworldindata.org/data/war-peace/war-and-peace-before-1945/
http://ourworldindata.org/data/war-peace/war-and-peace-after-1945/
There are a bunch of graphs on the site. I recommend perusing it.