Presidents Proposed Fourteen Points

I. Open covenants of peace, openly arrived at, after which there shall be no private international understandings of any kind but diplomacy shall proceed always frankly and in the public view.

I think this is still around today. Every country pretty much knows everything going on in other countries. They about their nuclear powers and it's clear who gets along and who doesn't. Nothing is really secret between any country anymore.

IV. Adequate guarantees given and taken that national armaments will be reduced to the lowest point consistent with domestic safety.
This point is deffinately not in use anymore. All countries have as many weapons and as much protection as they can. War seems to be able to occur at any time now adays so everyone always needs to be ready at anytime.

V. A free, open-minded, and absolutely impartial adjustment of all colonial claims, based upon a strict observance of the principle that in determining all such questions of sovereignty the interests of the populations concerned must have equal weight with the equitable claims of the government whose title is to be determined
This point is trying to be used still but I don't think it will ever be completely true or used. The governments will always say that they are doing things for the interest of the people but thats not always true. I don't think it will ever be true either.
XIV. A general association of nations must be formed under specific covenants for the purpose of affording mutual guarantees of political independence and territorial integrity to great and small states alike.
This point is still used today. We used this when 9/11 happened. Countries aided us to fight in the war against terrorism which gave us allies. This is also the most useful point and probably the most effective.

This point would most likely be the one that could prevent war because it creates allies. If a country is about to go to war with another country and one of the countries becomes allies with a very dominate country the war could be avoided.