Peace no relation tranquility
Peace is a concept of societal friendship and harmony in the absence of hostility and violence. In a social sense, peace is commonly used to mean a lack of conflict (such as war) and freedom from fear of violence between individuals or groups. 
"Psychological peace" (such as peaceful thinking and emotions) is perhaps less well defined, yet often a necessary precursor to establishing "behavioural peace."  Peaceful behaviour sometimes results from a "peaceful inner disposition."  Some have expressed the belief that peace can be initiated with a certain quality of inner tranquility that does not depend upon the uncertainties of daily life. The acquisition of such a "peaceful internal disposition" for oneself and others can contribute to resolving otherwise seemingly irreconcilable competing interests. Peace is not a state of excitement although we are happy when excited, but peace is when one's mind is quiet and satisfied.History
In ancient times and more recently, peaceful alliances between different nations were codified through royal marriages. Two examples, Hermodike I (c. 800 BC) and Hermodike II (c. 600 BC) were Greek princesses from the house of Agamemnon who married kings from what is now Central Turkey. The union of Phrygia / Lydia with Aeolian Greeks resulted in regional peace, which facilitated the transfer of ground-breaking technological skills into Ancient Greece; respectively, the phonetic written script and the minting of coinage (to use a token currency, where the value is guaranteed by the state). Both inventions were rapidly adopted by surrounding nations through further trade and cooperation and have been of fundamental benefit to the progress of civilization.
Throughout history, victors have sometimes used ruthless measures to impose peace upon the vanquished. In his book Agricola, the Roman historian Tacitus includes eloquent and vicious polemics against the rapacity and greed of Rome. One, that Tacitus says is by the Caledonian chieftain Calgacus, ends with: Auferre trucidare rapere falsis nominibus imperium, atque ubi solitudinem faciunt, pacem appellant. (To ravage, to slaughter, to usurp under false titles, they call empire; and where they make a desert, they call it peace. — Oxford Revised Translation).
Discussion of peace is therefore at the same time a discussion on its form.. Is it simply the absence of mass organized killing (war), or does peace require a particular morality and justice? (just peace).
A peace must be seen at least in two forms:A simple silence of arms, absence of war.
Absence of war accompanied by particular requirements for the mutual settlement of relations, which are characterized by terms such as justice, mutual respect, respect for law and good will.Since 1945, the United Nations and the United Nations Security Council have operated under the aim to resolve conflicts without war. Nonetheless, nations have entered numerous military conflicts since then.
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