Peace

Could anyone tell me about their origin in a few words

Great minds think alike
If you want peace, prepare for war
If you cant beat them , join them

"If you desire peace then prepare for war" is the distillation of much of Sun Tzu's "Art of War" - another of the great sayings is that 'the greatest general never fights'. Both are paradoxes, but have an essential truth - that weak nations rarely attack strong nations and that a great military strategist can defeat an enemy by arraying his forces is such a fashion that the enemy dare not attack, so that eventually the enemy runs out of supplies and is forced to retreat.
Some great generals do not have that opportunity, so being skilled at the art of battle itself is another, but lesser way of showing 'greatness'.

There is much literature about manoevering an enemy so that they cannot make war against you. "The Prince" by Niccolo Macchiavelli is another classic of strategy.

The idea of Detente is not new.

GREAT MINDS THINK ALIKE -- "Often quoted in jest today, this saying originated in the seventeenth century as the comic-sounding 'Great wits jump.' Daubridgecourt Belchier first recorded the saying in 'Hans Beer-Pot' as 'Good wits doe iumpe (agree).'...The expression 'Great minds jump' appeared in the late 1800s..." From Wise Words and Wives' Tales: The Origins, Meanings and Time-Honored Wisdom of Proverbs and Folk Sayings Olde and New; by Stuart Flexner and Doris Flexner (Avon Books, New York, 1993).

IF YOU CAN'T LICK (BEAT)THEM, JOIN THEM --"...Another of the 'old' sayings apparently born in this century, this one was first recorded by the American writer Quentin Reynolds in 'The Wounded Don't Cry' : 'There's an old political adage which says 'If you can't lick 'em, jine 'em.' A few years later, Holger Cahill used the alternative form, 'If you can't beat them...' in 'Look South to the Polar Star' ..." From Wise Words and Wives' Tales: The Origins, Meanings and Time-Honored Wisdom of Proverbs and Folk Sayings Olde and New; by Stuart Flexner and Doris Flexner (Avon Books, New York, 1993).