'Entente' is an "understanding, agreement, intelligence" between states, and that friendship is generally achieved diplomatically. It's actually a French word, it's pronounced 'antante' (with the latest 'e' very soft).
It is a type of pact or mutual trust agreement between several countries. Name given to the London Pact, between France, England and Russia and some of their allies in World War I. It was officialized on September 5, 1914.
ENTENTE:PACTO OF CONFIDENCE AND SECURITY BY CONVENTION, ESPECIALLY BETWEEN COUNTRIES.