You would have to achieve it first.
world peace and security means the protection of the world to maintain peace.
What organizations tried to maintain world peace after 1919?
maintain world peace
After world war 2, the United Nations was formed in attempt to maintain world peace, and the United Nations provides peace keepers in areas of conflict.
UN
to maintain world peace
The body that has the responsibility for keeping world peace is the United Nations. Most of the nations of the world gather together to talk about global issues that effect everyone and do their best to maintain peace in the world.
The United Nations
The United Nations
By friendship we can maintain peace without war
The United Nations.
The League of Nations was formed to try and keep peace at the end of WWI.