Here are the statistics from history:
Since 1000BC there have been over 8000 peace treaties.
Each one has lasted on average no more than nine years.
The League of Nations was founded in 1920 to ensure that World War I was ‘the war to end all wars”.
Twenty years later, World War II erupted.
The failure of the League of Nations gave rise to the United Nations, established in 1945 to end wars and conflicts between nations once and for all.
Since then there have been 160 major wars.
The world desperately needs a new paradigm to create lasting peace for our family of nations. The United Nations and similar well-meaning organisations have been a failure. Conferences, treaties and proclamations have all failed.
Here is a solution based on scientific principle and ancient Vedic wisdom, and verified by scientific research:–

—Dr John Hagelin, is an American particle physicist, three-time candidate of the Natural Law Party for President of the United States, and the director of the Transcendental Meditation movement for the US.
The TM-Sidhi program when practiced in groups is the most effective method to create lasting world peace, and the coherence creating groups (such as the Purusha Program, mentioned on this site) create this coherence every day, every month, every year.
Furthermore, the cost of establishing coherence creating groups is negligible in comparison to the vast sums allocated for defence spending by all governments. For the cost of just one new stealth bomber, a permanent group could be established to take care of world peace in perpetuity.
Dr John Hagelin talks on the Science of Peace: